JP7463301B2 - Oxidative hair brightener or hair dye from cold production for level 2 coloring - Google Patents

Description

This application relates to an oxidative hair lightening or dyeing agent in cream form, a kit comprising said hair lightening or dyeing agent, and a method of hair lightening or dyeing using said hair lightening or dyeing agent.

So-called oxidative hair brightening (lightening) agents are used to lighten or bleach hair. So-called oxidative dyes are used for permanent and intensive dyeing with corresponding fastness properties. Such dyes usually contain an oxidative dye precursor, a so-called developer component and a coupler component. Under the influence of an oxidizing agent or atmospheric oxygen, the developer components form the actual dye between themselves or when combined with one or more coupler components. Oxidative dyes are characterized by excellent and long-lasting dyeing results. For natural-looking dyeing, it is usually necessary to use a mixture of more oxidative dye precursors (OFV). Hair lightening or dyeing products often contain at least one direct dye (DZ) to make matte unwanted shades or nuances of melanin decomposition products.

In most cases, oxidative hair whitening (hair lightening) and hair dye products have an alkaline pH to stabilize the dye precursors during storage and to facilitate reaction during oxidative application, which is adjusted with an alkalizing agent such as an alkanolamine, ammonia or an inorganic base.

To form the dye, alkaline dye ingredients are usually mixed with an aqueous hydrogen peroxide solution to form a homogeneous cream or gel, which is then applied directly to the hair to be dyed. To lighten hair by oxidative decomposition of the natural hair dye melanin, alkaline lightening ingredients are usually mixed with an aqueous hydrogen peroxide solution to form a homogeneous cream or gel, which is then immediately applied to the hair to be bleached. The coloring or lightening mixture is left on the hair for 5-60 minutes until the oxidative formation of the dye on the hair or the decomposition of the melanin is complete. The coloring or brightening mixture is then washed off.

The pH value of the lightening or coloring agent can be used to control the degree of hair color change or lightening. Furthermore, the pH value of the lightening or coloring agent can be used taking into account the quality of the hair to be lightened or dyed. For thin or pre-damaged hair, in contrast to strong or undamaged hair, a slightly acidic to weakly alkaline environment is sufficient for lightening or coloring. In a more alkaline medium, lightening or coloring of thin or previously damaged hair may be stronger than necessary. Said hair is also further damaged by strong alkalizing agents. Lightening or coloring carried out in a weakly acidic or weakly alkaline environment also offers the possibility of so-called level 2 coloring, i.e. pastel coloring that is more easily washed off or overcolored than the more intense level 3 coloring. Thus, the consumer can change the color of the hair more quickly.

The above-mentioned oxidative dye precursors (OFVs) and alkalizing agents are usually incorporated into a cosmetically suitable carrier, such as a cream. The said carrier ensures a uniform distribution and sufficient residence time of the hair brightener or hair dye on the hair. Many OFVs are aromatic amine compounds. Some of the commonly used OFVs, such as p-toluenediamine or 5-diamino-1-(2-hydroxyethyl)pyrazole, are only stable or can be used on a large scale in the form of salts, in particular as sulfates. Their addition therefore increases the electrolyte concentration in the said carrier. This can lead to destabilization of the gel or cream carrier. The carrier of the agent according to the invention must therefore have a good resistance to higher electrolyte concentrations. Furthermore, the carrier must have a suitable viscosity for application, even after dilution with an aqueous oxidizing agent composition. Cream carriers with too high a content of high-melting fatty components, such as fatty alcohols, often show a particularly sharp drop in the viscosity of the application mixture compared to carriers without oxidizing agents.

The present invention is based on the task of providing an oxidative hair lightening or hair dye that can be produced under the most economical and sustainable conditions. Furthermore, the present invention is based on the task of providing an oxidative hair lightening or hair dye that is easy to mix and apply.

Furthermore, the present invention is based on the task of providing an oxidative hair whitening or hair dye that has a cream-like consistency, feel and appearance without a high content of high melting point fatty ingredients.

Furthermore, the present invention is based on the task of providing an oxidative hair dye that has good resistance to higher electrolyte concentrations.

Further, the present invention is based on the task of providing an oxidative hair dye for coloring level 2.

These tasks are solved by agents for oxidative hair lightening or hair coloring, which agents have the following properties, based on the weight of the agent:
- 70 to 90% by weight, preferably 73 to 86% by weight, particularly preferably 76 to 84% by weight of water at least one alkalizing agent,
- at least one crosslinked copolymer composed of acrylic acid and non-ethoxylated esters of acrylic acid with linear C10-C30 monoalcohols as monomers, which are present in a total amount of 0.2 to 0.6% by weight, preferably 0.3 to 0.5% by weight and particularly preferably 0.4 to 0.45% by weight, in each case based on the weight of the drug,
- at least one linear saturated 1-alkanol having one hydroxy group and 8 to 22 carbon atoms in a total amount of 0.3 to 1.5% by weight, preferably 0.4 to 1.2% by weight, particularly preferably 0.5 to 1.0% by weight and very particularly preferably 0.6 to 0.8% by weight, % by weight, preferably 2 to 5% by weight, particularly preferably 2.5 to 4.5% by weight of at least one anionic surfactant,
- Optionally, at least one coloring substance selected from oxidative dye precursors, direct action hair dyes and mixtures thereof;
Contains
Contains no oxidizing agents
The drug is
- preferably containing sodium polyacrylate in a total amount of 0.1 to 1.5% by weight, particularly preferably 0.5 to 1.3% by weight and very particularly preferably 0.8 to 1.1% by weight, in each case based on the weight of the drug, preferably with a weight-average molar mass Mw in the range from 1,000,000 to 20,000,000 Daltons, particularly preferably 6,000,000 to 15,000,000 Daltons, particularly preferably said sodium polyacrylate being contained in a pregelled state in the water-in-oil emulsion,
Furthermore, said agents are each characterized in that their pH value, measured at 20° C., is in the range of 7.5 to 9.5, preferably in the range of 8.0 to 9.0.

The product according to the invention represents the alkaline dye component of an oxidative hair lightening or hair dyeing product. It is usually mixed with an aqueous hydrogen peroxide preparation immediately before use and then applied to the hair to be lightened or dyed. Until mixed with the aqueous hydrogen peroxide preparation, the agent of the invention does not contain an oxidizing agent.

[Water content]
The agents according to the invention contain from 70 to 90% by weight, preferably from 73 to 86% by weight, particularly preferably from 76 to 84% by weight, of water, in each case based on their weight.

[Alkalizing agent]
The agent according to the invention contains at least one alkalizing agent. The alkalizing agent preferred for adjusting the preferred pH is selected from the group comprising ammonium hydroxide, basic amino acids, alkali hydroxides, alkanolamines, alkali metal metasilicates, alkali phosphates and alkali hydrogen phosphates and mixtures thereof. The preferred alkali metal ions are lithium, sodium, potassium, in particular sodium or potassium.

Basic amino acids which can be used as alkalizing agents are preferably selected from the group L-arginine, D-arginine, D,L-arginine, L-lysine, D-lysine and D,L-lysine, particularly preferably L-arginine, D-arginine and D,L-arginine as alkalizing agents within the meaning of the present invention.

The alkali hydroxide that can be used as the alkalizing agent is preferably selected from sodium hydroxide and potassium hydroxide.

Alkanolamines which may be used as alkalizing agents are preferably selected from primary amines having a C ₂ -C ₆ alkyl base with at least one hydroxyl group. Particularly preferred alkanolamines are selected from the group formed by 2-aminoethan-1-ol (monoethanolamine), 3-aminopropan-1-ol, 4-aminobutan-1-ol, 5-aminopentan-1-ol, 1-aminopropan-2-ol, 1-aminobutan-2-ol, 1-aminopentan-2-ol, 1-aminopentan-3-ol, 1-aminopentan-4-ol, 3-amino-2-methylpropan-1-ol, 1-amino-2-methylpropan-2-ol, 3-aminopropane-1.2-diol, 2-amino-2-methylpropane-1.3-diol-ol.
Particularly preferred alkanolamines according to the invention are selected from the group 2-aminoethan-1-ol, 2-amino-2-methylpropan-1-ol and 2-amino-2-methyl-propane-1.3-diol.

A particularly preferred alkalizing agent according to the invention is monoethanolamine (2-aminoethan-1-ol). In order to achieve a dyeing process as odorless as possible and to optimize the dyeing fastness, monoethanolamine is contained in a total amount of 0.2 to 4% by weight, preferably 0.5 to 3% by weight, more preferably 1 to 2.5% by weight, particularly preferably 1.5 to 2% by weight, based on the weight of the brightening or coloring agent according to the invention.

In addition to or instead of monoethanolamine, other preferred brightening and coloring agents according to the invention contain ammonium hydroxide, i.e. ammonia in the form of an aqueous solution. The corresponding aqueous ammonia solution can be a 10-35% solution (calculated in vol.%). 100 g of aqueous ammonia solution with 25% NH ₃ by volume contains about 50 g of ammonia. Preferably, ammonia is used in the form of a 20-30% by volume solution, in particular a 25% by volume solution.

In a particularly preferred embodiment, the whitening or colouring agent according to the invention contains ammonium hydroxide in an amount of 0.2 to 6% by weight, preferably 0.3 to 5% by weight, more preferably 0.5 to 3% by weight, and particularly preferably 1 to 2% by weight, based on the weight of the whitening or colouring agent according to the invention.

Furthermore, other alkalizing agents such as potassium hydroxide and sodium hydroxide may be contained, in each case preferably in a total amount of 0.05 to 1.5% by weight, particularly preferably 0.1 to 0.6% by weight, based on the weight of the brightening or coloring agent according to the present invention.

In another particularly preferred form, the brightening or coloring agent of the present invention contains at least one alkalizing agent selected from the group including alkanolamines, potassium hydroxide, sodium hydroxide and mixtures thereof.

In another particularly preferred form, the brightening or colouring agent according to the invention contains at least one alkalizing agent, respectively, in a total amount of 0.02 to 0.4 mol/100 g, preferably 0.05 to 0.3 mol/100 g, in moles of alkalizing agent per 100 grams of the agent according to the invention.

The agent according to the invention is characterized by a pH value in the range of 7.5 to 9.5, preferably in the range of 8.0 to 9.0, each measured at 20°C.

A further essential feature of the composition (medicament) according to the invention is the content of at least one crosslinked copolymer constructed from acrylic acid and a non-ethoxylated ester of acrylic acid with a linear C10-C30 monoalcohol as monomers, said crosslinked copolymer being contained in a total amount of 0.2-0.6% by weight, preferably 0.3-0.5% by weight, particularly preferably 0.4-0.45% by weight, each based on the weight of the composition. The at least one crosslinked copolymer of acrylic acid and a non-ethoxylated ester of acrylic acid with a linear C10-C30 monoalcohol is preferably selected from the copolymers of the INCI name Acrylates/C10-30 alkyl acrylate crosspolymer. As crosslinking agent, sucrose allyl ether or pentaerythrityl allyl ether is preferably contained.

The particularly preferred crosslinked copolymers of acrylic acid and non-ethoxylated esters of acrylic acid with linear C10-C30 monoalcohols according to the invention are obtainable by polymerization of a monomer mixture which contains (in each case based on its weight) 80 to 99% by weight, preferably 90 to 98% by weight, of acrylic acid, a total of 0.9 to 19.9% by weight, preferably 2 to 10% by weight, of acrylic acid and at least one non-ethoxylated ester of a linear C10-C30 monoalcohol, and a total of 0.1 to 4% by weight of at least one crosslinker.

Other crosslinked copolymers of acrylic acid and non-ethoxylated esters of acrylic acid with linear C10-C30 monoalcohols which are particularly preferred according to the invention are characterized by a 0.5 wt. % dispersion in water at 25° C., a pH in the range of 5.8 to 6.3, and a viscosity in the range of 45,000 to 65,000 mPas measured using a Brookfield RVF or Brookfield RVT viscometer with spindle #7 at a rotational frequency of 20 min ⁻¹ .

The content of at least one crosslinked copolymer composed of acrylic acid and a non-ethoxylated ester of acrylic acid with a linear C10-C30 monoalcohol as monomers is selected so that the viscosity of the agent according to the invention is preferably in the range of 3,000 to 25,000 mPas, preferably 4,000 to 20,000 mPas, particularly preferably 6,000 to 12,000 mPas, said viscosity being measured in each case at 20°C using a Haake VT550 viscometer equipped with the measuring system SV.

The agents according to the invention and the agents used according to the invention further contain at least one linear saturated 1-alkanol having one hydroxy group and 8 to 22 carbon atoms in a total amount of 0.3 to 1.5% by weight, preferably 0.4 to 1.2% by weight, particularly preferably 0.5 to 1.0% by weight, very particularly preferably 0.6 to 0.8% by weight, each based on the weight of the agent. According to the invention, this is at least one linear saturated 1-alkanol having one hydroxy group and 8 to 22 carbon atoms selected from 1-decanol, 1-dodecanol (lauryl alcohol), 1-tridecanol, 1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetyl alcohol), 1-octadecanol (stearyl alcohol), 1-eicosanol (arachyl alcohol) and 1-docosanol (behenyl alcohol) and mixtures thereof. According to the invention, a preferred alkanol mixture is coconut alcohol, i.e. an alkanol mixture obtained by hydrogenation of coconut oil. Particularly preferred coconut alcohols according to the invention have the following chain length distribution with respect to their weight: _C10 and below: zero to maximum 3% by weight, _C12 : 48-58% by weight, _C14 : 18-24% by weight, _C16 : 8-12% by weight, _C18 : 11-15% by weight, _C20 : zero to maximum 1% by weight. The _C8 -C22 alkan- ₁ -ols are selected from lauryl alcohol, coconut alcohol, 1-tetradecanol (myristyl alcohol), cetyl alcohol and stearyl alcohol, and mixtures thereof, in particular from coconut alcohol and lauryl alcohol.

For the purposes of this application, the above linear saturated 1-alkanols having one hydroxy group are not considered to be surfactants, either with respect to the agents and compositions of the present invention (M1) or with respect to the oxidizing agent preparations (M2).

[Anionic Surfactants]
The agents according to the invention and for use according to the invention contain at least one anionic surfactant in a total amount of 1 to 6% by weight, preferably 2 to 5% by weight, particularly preferably 2.5 to 4.5% by weight, based on the weight of the agent in each case.

For purposes of this application, surfactants and emulsifiers are amphiphilic (bifunctional) compounds consisting of at least one hydrophobic and at least one hydrophilic portion of the molecule.

For purposes of this application, saturated and unsaturated alkan-1-ols having at least 4 carbon atoms in the alk(en)yl group and glyceryl fatty acid monoesters and diesters having at least 4 carbon atoms in the fatty acid group are not counted as surfactants.

The hydrophobic group is preferably a hydrocarbon chain having 8 to 30 carbon atoms, which may be saturated or unsaturated, linear or branched. This C ₈ -C ₃₀ -alkyl chain is particularly preferably linear. The fundamental properties of surfactants and emulsifiers are ordered adsorption at interfaces, aggregation into micelles and the formation of lyotropic phases.

When selecting a surfactant according to the invention, it may be preferable to use a mixture of surfactants in order to optimally adjust the properties of the oxidative brightening or colouring agents according to the invention.
As anionic surfactants, all anionic surface-active substances suitable for use on the human body are suitable for the means according to the invention, which have water-soluble anionic groups, for example sulfate, sulfonate or phosphate groups, and lipophilic alkyl groups having approximately 8 to 30 C atoms in the molecule, preferably 8 to 24 C atoms. Furthermore, glycol or polyglycol ether groups, ester, ether and amide and hydroxyl groups may also be present in the molecule. Examples of suitable anionic surfactants are mono-, di- and trialkanol ammonium salts having 2 to 4 C atoms in the alkanol group, in sodium, potassium and ammonium form, respectively, as well as polyethoxylated ether carboxylic acids, acyl sarcosides, acyl taurides, acyl isethionates, sulfosuccinic acid mono- and dialkyl esters and sulfosuccinic acid monoalkyl polyoxyethyl esters having 1 to 6 ethylene oxide groups, linear alkanesulfonates, linear alpha-olefin sulfonates, sulfonates of unsaturated fatty acids having up to 6 double bonds, alpha-sulfofatty acid methyl esters of fatty acids, C ₈ -C 20 alkyl sulfates containing 1 to 15 oxyethyl groups and C ₈ -C ₂₀ alkyl sulphates containing 1 to 15 oxyethyl groups. ₂₀ alkyl ether sulfates, surface-active hydroxysulfonates, mixtures of sulfated hydroxyalkyl polyethylene and/or hydroxyalkylene propylene glycol ethers, esters of tartaric or citric acid with ethoxylated or propoxylated fatty alcohols, optionally polyethoxylated alkyl and/or alkenyl ether phosphates, sulfated fatty acid alkylene glycol esters, linear and branched fatty acids having 8 to 30 C atoms and their salts (soaps), as well as monoglyceride sulfates and monoglyceride ether sulfates.

Preferred anionic surfactants are selected from C 8 -C 20 -alkyl sulfates, C ₈ -C ₂₀ -alkyl ether sulfates and C ₈ -C ₂₀ -ether carboxylic acids, each having 8 to ₂₀ C atoms in the alkyl group and 0 to ₁₂ ethylene oxide groups in the molecule. Particular preference is given to sodium laureth sulfate, which has 1 to 3, particularly preferably 2, ethylene oxide groups in the molecule.

Very preferred compositions according to the invention contain at least one anionic surfactant selected from C 8 -C 20 alkyl sulfates, C ₈ -C ₂₀ alkyl ether sulfates and C ₈ -C ₂₀ ether carboxylic acids, in each case having 8 _{to 20} C atoms in the alkyl group and 0 to 12 ethylene oxide groups in the molecule, sodium laureth sulfate having 1 to 3, particularly preferably 2, ethylene oxide groups in the molecule, in a total amount of 1 to 6% by weight, preferably 2 to 5% by weight, particularly preferably 2.5 to 4.5% by weight of said surfactants, in each case based on the weight of the drug, being particularly preferred.

[Nonionic Surfactant]
In a preferred embodiment of the present invention, the medicaments according to the present invention and the medicaments used according to the present invention contain at least one non-ionic surfactant. Particularly preferably, the at least one non-ionic surfactant is contained in a total amount of 0.01 to 1% by weight, preferably 0.05 to 0.5% by weight, particularly preferably 0.1 to 0.3% by weight, each based on the weight of the medicament.

Non-ionic surfactants suitable for use on the human body for the means according to the invention are all non-ionic surface-active substances suitable for use on the human body which have at least one water-soluble non-ionic group, in particular a polyethylene glycol ether group having at least two ethylene oxide units, a glycoside group, in particular a glucose or methylglucose group, a polyglycoside group having on average several glycoside units, a polyglycerol group having at least two glycerol units, a sorbitan group, an amide group or several different versions of these groups, such as, for example, a sorbitan group and a polyethylene glycol ether group, and a lipophilic alkyl group having about 8 to 30 C atoms, preferably 10 to 24 C atoms. Nonionic surfactants which are particularly preferably used are selected from those containing nonionic surfactants containing 7 to 80 moles of ethylene oxide per mole of ethoxylated castor oil, ethoxylated C 8 -C 30 alkanols containing 4 to 100 moles of ethylene oxide per mole , _ethoxylated C ₈ -C 30 carboxylic acids containing 5 to 30 moles of ethylene oxide per mole _, ethoxylated _sorbitan monoesters of linear saturated and unsaturated C ₁₂ -C ₃₀ carboxylic acids, optionally hydroxylated, containing 4 to 50 moles of ethylene oxide per mole (in particular ethoxylated sorbitan monoesters of myristic acid, palmitic acid, stearic acid or mixtures of these fatty acids), alkyl mono- and alkyl oligoglycosides containing 8 to 22 carbon atoms in the alkyl group, and their ethoxylated analogues, and mixtures of the abovementioned substances.

The formula of the ethoxylated C ₈ -C ₃₀ -alkanols is R ¹ O(CH ₂ CH ₂ O) _n H, where R ¹ represents a linear or branched alkyl and/or alkenyl group having 8 to 30 carbon atoms and n is the average number of ethylene oxide units per molecule, 4 to 100, preferably 6 to 30, particularly preferably 12 to 20 mol of ethylene oxide per mole of alkanol, said alkanols being preferably selected from capryl alcohol, 2-ethylhexyl alcohol, capric alcohol, lauryl alcohol, isotridecyl alcohol, tridecyl alcohol, myristyl alcohol, cetyl alcohol, palmitoleic alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, arachyl alcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol and brassydyl alcohol and from technical mixtures thereof. Also suitable are adducts of 10 to 100 moles of ethylene oxide with industrial fatty alcohols having 12 to 18 carbon atoms, such as coconut, palm, palm kernel, and tallow fatty alcohols. Particularly preferred are trideceth-6, isotrideceth-6, undeceth-6, myreth-6, laureth-10, laureth-12, laureth-15, laureth-20, laureth-30, myreth-10, myreth-12, myreth-15, myreth-20, myreth-30, ceteth-10, ceteth-12, ceteth-15, ceteth-20, ceteth-30, steareth-10, steareth-12, steareth-15, steareth-20, steareth-30, oleth-10, oleth-12, oleth-15, oleth-20, oleth-30, ceteareth-10, ceteareth-15, ceteareth-12, ceteareth-15, ceteareth-20, and ceteareth-30. Also particularly preferred are coceth-10, coceth-12, coceth-15, coceth-20, coceth-30; ceteth-10, ceteth-12, ceteth-15, ceteth-20, ceteth-30, steareth-10, steareth-12, steareth-15, steareth-20, steareth-30, and mixtures thereof.

Ethoxylated C ₈ -C ₃₀ -carboxylic acids have the formula R ¹ O(CH ₂ CH ₂ O) _n H, where R ¹ O represents a linear or branched, saturated or unsaturated acyl group having 8 to 30 carbon atoms and n represents the average number of ethylene oxide units per molecule, 5 to 30, preferably 6 to 20, particularly preferably 6 to 12 mol of ethylene oxide per mole of C ₈ -C ₃₀ -carboxylic acid, said carboxylic acids being preferably selected from caprylic acid, 2-ethylhexanoic acid, capric acid, lauric acid, isotridecanoic acid, myristic acid, cetyl acid, palmitoleic acid, stearic acid, isostearic acid, oleic acid, elaidic acid, petroselinic acid, arachic acid, gadoleic acid, behenic acid, erucic acid, brassidic acid and technical mixtures thereof. Also suitable are adducts of 5 to 30, preferably 6 to 20, particularly preferably 6 to 12, moles of ethylene oxide with technical fatty acids having 12 to 18 carbon atoms, such as coconut, palm, palm kernel or tallow fatty acids.

Alkyl mono- and oligoglycosides having from 8 to 22 carbon atoms in the alkyl group are known as nonionic surfactants corresponding to formula (I).
R ¹ O-[G] _p (I)
where R ¹ is an alkyl or alkenyl group containing 8 to 22 carbon atoms, G is a sugar residue containing 5 or 6 carbon atoms and p represents a number between 1 and 10. The alkyl and alkenyl oligoglycosides may be derived from aldoses or ketoses having 5 or 6 carbon atoms, preferably glucose. Thus, preferred alkyl and/or alkenyl oligoglycosides are alkyl and/or alkenyl oligoglucosides. The index p in the general formula (I) indicates the degree of oligomerization (DP), i.e. the distribution of monoglycosides and oligoglycosides, and is a number between 1 and 10. p in the individual molecules must always be an integer and can take the value p=1 to 6, but the value p of a particular alkyl oligoglucoside is an analytically determined arithmetic quantity and usually represents a fractional number. Preferably, alkyl and/or alkenyl oligoglycosides are used which have an average degree of oligomerization p between 1.1 and 3.0. Preference is given to alkyl and/or alkenyl oligoglycosides whose degree of oligomerization is less than 1.7 and in the range of 1.2 to 1.4. The alkyl or alkenyl group R ¹ may be derived from primary alcohols containing from 4 to 22, preferably from 8 to 22, carbon atoms. Representative examples are capryl alcohol, capric alcohol, undecrylic alcohol, lauryl alcohol, myristyl alcohol, cetyl alcohol, palmitoleic alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, arachyl alcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol, brazilianyl alcohol; natural fatty alcohols such as coconut alcohol, and technical mixtures. Examples of commercially available alkyl oligoglucoside products are the Oramix® grades from Seppic, e.g. Oramix® NS10, and the Plantacare® grades from BASF, e.g. Plantacare® 2000UP, Plantacare® 1200UP, Plantacare® 810UP, Plantacare® 818UP. Also particularly preferred is coco glucoside, a nonionic surfactant corresponding to formula (I) above, in which R ¹ represents a coco alkyl group containing 8 to 16 carbon atoms, G represents a glucose residue and p is a number in the range of 1.2 to 1.4.

Highly preferred compositions according to the invention contain at least one nonionic surfactant selected from nonionic surfactants containing 7 to 80 moles of ethylene oxide per mole of ethoxylated castor oil, ethoxylated C ₈ -C ₃₀ alkanols containing 6 to 30, preferably 12 to 20, moles of ethylene oxide per mole, ethoxylated C 8 -C 30 carboxylic acids containing 5 to 30 moles of ethylene oxide per mole, _{ethoxylated sorbitan monoesters of linear, saturated and unsaturated C 12 -C 30} carboxylic acids, optionally hydroxylated, containing 4 to 50 moles of ethylene oxide _per mole, alkyl mono- and oligoglycosides having 8 to 22 carbon atoms in the alkyl group, and mixtures of the abovementioned substances, in a total amount of 0.01 to 1% by weight, preferably 0.05 to 0.5% by weight, particularly preferably 0.1 to 0.3% by weight, each based on the weight of the agent.

Further highly preferred agents according to the invention contain a mixture of sodium laureth sulfate containing 1 to 3, particularly preferably 2, ethylene oxide groups in the molecule and at least one nonionic surfactant selected from ethoxylated C ₈ -C ₃₀ alkanols containing 6 to 30, preferably 12 to 20, moles of ethylene oxide per mole and alkyl mono- and oligoglycosides containing 8 to 22 carbon atoms in the alkyl group in a total amount of 1.01 to 7% by weight, preferably 2.05 to 5.5% by weight and particularly preferably 2.6 to 4.8% by weight, in each case based on the weight of the agent.

Furthermore, the agent according to the invention contains sodium polyacrylate. According to the invention, sodium polyacrylate is preferably understood to mean the polymer with CAS number 9003-04-7. Preferred sodium polyacrylates according to the invention have a weight-average molecular weight Mw ranging from 1,000,000 to 20,000,000 Daltons, preferably from 6,000,000 to 15,000,000 Daltons. The average molecular weight Mw can be determined, for example, by gel permeation chromatography (GPC) using polystyrene as an internal standard according to DIN 55672-3, version 8/2007.

The inventive mixture of crosslinked copolymers of acrylic acid with non-ethoxylated esters of acrylic acid with linear C10-C30 monoalcohols, linear saturated C8-C22 alkan-1-ols, anionic surfactants and sodium polyacrylate provides thickening of the drug with an optimal viscosity for application techniques while at the same time maintaining a gel-like cream viscosity with excellent tactile sensation.

A highly preferred agent in the present invention contains sodium polyacrylate in a total amount of 0.1 to 1.5% by weight, preferably 0.5 to 1.3% by weight, and particularly preferably 0.8 to 1.1% by weight, based on the weight of the agent.

In a particularly preferred version, the sodium polyacrylate is contained as pregelled sodium polyacrylate in the water-in-oil emulsion. Here, it is particularly preferred that the sodium polyacrylate-containing water-in-oil emulsion contains 40-60% by weight sodium polyacrylate, 25-45% by weight total oil, 0.5-4.9% by weight total surfactant, and 0.5-4.9% by weight water, each based on its weight.

Particularly preferred are natural and synthetic hydrocarbons, particularly preferably mineral oils, paraffin oils, C ₁₈ -C ₃₀ isoparaffins, in particular isoeicosane, polyisobutene and polydecene, C ₈ -C ₁₆ isoparaffins and 1,3-di(2-ethylhexyl)-cyclohexane; branched alkanols containing hydroxy groups and from 10 to 50 carbon atoms; benzoic acid esters of linear or branched C _{8 -22} alkanols; triglycerides of linear or branched, saturated or unsaturated, optionally hydroxylated, C _8-30 fatty acids, in particular natural oils; dicarboxylic acid esters of linear or branched C ₂ -C ₁₀ alkanols; esters of linear or branched, saturated or unsaturated fatty acids having 2 to 30 carbon atoms, which may be hydroxylated, with linear or branched, saturated or unsaturated fatty alcohols having 2 to ₃₀ carbon atoms; The oils contained in _{the sodium} polyacrylate-containing water-in-oil emulsions are selected from the following: addition products of 1 to 5 propylene oxide units to a C22 alkanol; _C8 - _C22 fatty alcohol esters of mono- or polyhydric _C2 - _C7 hydroxycarboxylic acids; symmetrical, asymmetrical or cyclic esters of carbonic acid with a _C3-22 alkanol, a _C3-22 alkanediol or a _C3-22 alkanetriol; esters of dimers of unsaturated _C12 - _C22 fatty acids (dimer fatty acids) with monohydric linear, branched or cyclic _C2 - _C18 alkanols or with polyhydric linear or branched _C2 - _C6 alkanols; silicone oils and mixtures of the abovementioned substances. A particularly preferred oil according to the invention is mineral oil.

Particular preference is given to at least one surfactant selected from the non-ionic surfactants contained in the sodium polyacrylate-containing water-in-oil emulsions. Particularly preferably used non-ionic surfactants are selected from ethoxylated castor oils containing 7 to 80 moles of ethylene oxide per mole, ethoxylated C ₈ -C ₂₄ -alkanols containing 5 to 30 moles of ethylene oxide per mole, ethoxylated C ₈ -C ₂₄ carboxylic acids containing 5 to 30 moles of ethylene oxide per mole, ethoxylated sorbitan monoesters of optionally hydroxylated linear saturated and unsaturated C ₁₂ -C ₃₀ -carboxylic acids containing 4 to 50 moles of ethylene oxide per mole (in particular ethoxylated sorbitan monoesters of myristic acid, palmitic acid, stearic acid or mixtures of these fatty acids ), alkyl mono- and oligoglycosides having 8 to 22 carbon atoms in the alkyl group and their ethoxylated analogues, and mixtures of the abovementioned substances.

Ethoxylated C ₈ -C ₂₄ -alkanols have the formula R ¹ O(CH ₂ CH ₂ O) _n H, in which R ¹ represents a linear or branched alkyl and/or alkenyl group having 8 to 24 carbon atoms and n represents the average number of ethylene oxide units per molecule, 5 to 30, preferably 6 to 20, particularly preferably 6 to 12 mol of ethylene oxide per mole of alkanol, which alkanol is preferably selected from capryl alcohol, 2-ethylhexyl alcohol, capric alcohol, lauryl alcohol, isotridecyl alcohol, tridecyl alcohol, myristyl alcohol, cetyl alcohol, palmitoleic alcohol, stearyl alcohol, isostearyl alcohol, oleyl alcohol, elaidyl alcohol, petroselinyl alcohol, arachyl alcohol, gadoleyl alcohol, behenyl alcohol, erucyl alcohol and brazidyl alcohol, and technical mixtures thereof. Also suitable are adducts of 10 to 100 moles of ethylene oxide with industrial fatty alcohols containing 12 to 18 carbon atoms, such as coconut, palm, palm kernel, tallow fatty alcohols, etc. Trideceth-6, isotrideceth-6, undeceth-6, myreth-6, laureth-10, laureth-12, laureth-15, laureth-20, laureth-30, myreth-10, myreth-12, myreth-15, myreth-20, myreth-30, ceteth-10, ceteth-12, ceteth-15, ceteth-20, ceteth-30, steareth-10, steareth-12, steareth-15, steareth-20, ceteth-30, steareth-10, steareth-12, steareth-15, steareth-20, steareth-30, steareth-10, steareth-12, steareth-15 ...30, steareth-30, steareth-30, steareth-30, steareth-30, steareth-30, Particularly preferred are oleth-20, steareth-30, oleth-10, oleth-12, oleth-15, oleth-20, oleth-30, ceteareth-10, ceteareth-15, ceteareth-12, ceteareth-15, ceteareth-20, ceteareth-30, coceth-10, coceth-12, coceth-15, coceth-20, coceth-30; trideceth-6 and isotrideceth-6 and mixtures thereof.

Ethoxylated C ₈ -C ₂₄ -carboxylic acids have the formula R ¹ O(CH ₂ CH ₂ O) _n H, where R ¹ O represents a linear or branched, saturated or unsaturated acyl group having 8 to 24 carbon atoms and n represents the average number of ethylene oxide units per molecule, 5 to 30, preferably 6 to 20, particularly preferably 6 to 12 mol of ethylene oxide per mole of C ₈ -C ₂₄ -carboxylic acid, said carboxylic acids being preferably selected from caprylic acid, 2-ethylhexanoic acid, capric acid, lauric acid, isotridecanoic acid, myristic acid, cetyl acid, palmitoleic acid, stearic acid, isostearic acid, oleic acid, elaidic acid, petroselinic acid, arachyic acid, gadoleic acid, behenic acid, erucic acid, brassidic acid and technical mixtures thereof. Also suitable are adducts of 5 to 30, preferably 6 to 20, particularly preferably 6 to 12 mol of ethylene oxide with technical fatty acids having 12 to 18 carbon atoms, such as coconut, palm, palm kernel or tallow fatty acids.

Highly preferred agents according to the invention are characterized in that they contain at least one sodium polyacrylate having a mass-average molar mass Mw in the range from 1,000,000 to 20,000,000 Daltons, preferably from 6,000,000 to 15,000,000 Daltons, in a total amount of 0.1 to 1.5% by weight, preferably 0.5 to 1.3% by weight, particularly preferably 0.8 to 1.1% by weight, each based on the weight of the agent, where the sodium polyacrylate is contained in a pregelled state in a water-in-oil emulsion,
The water-in-oil emulsion contains, each based on its weight, 40-60% by weight of sodium polyacrylate, 25-45% by weight in total of oil, preferably mineral oil, 0.5-4.9% by weight in total of surfactant, preferably 0.5-4.9% by weight of niotonic acid, and 0.5-4.9% by weight of water.

The combination of crosslinked copolymers of acrylic acid with non-ethoxylated esters of acrylic acid with linear C10-C30 monoalcohols, linear saturated 1-alkanols, anionic surfactants and sodium polyacrylate creates a particularly rich and creamy viscosity and feel of the whitening and coloring agents according to the invention and preferred according to the invention. Moreover, this combination ensures an optimal viscosity for application techniques, even after mixing with the strongly acidic aqueous hydrogen peroxide preparation (M2). This results in ready-to-use application mixtures with pH values in the range of 6.0 to 8.0, preferably 6.5 to 7.5, each measured at 20°C.

The agents preferably and preferentially used according to the invention contain a total amount of 0.01 to 7% by weight, more preferably 0.1 to 6% by weight, particularly preferably 0.5 to 5.5% by weight and very particularly preferably 1 to 5.2% by weight of at least one oil, in each case based on the weight of the agent, these amounts including the oil from the optionally contained sodium polyacrylate emulsion preferred according to the invention. This additional oil may be selected from the same oils that may be contained in the sodium polyacrylate emulsion preferred according to the invention. Preferably, the at least one additional oil is selected from the group consisting of natural and synthetic hydrocarbons, particularly preferably mineral oils, paraffin oils, C ₁₈ -C ₃₀ isoparaffins, in particular isoeicosane, polyisobutene and polydecene, C ₈ -C ₁₆ isoparaffins and 1,3-di(2-ethylhexyl)-cyclohexane; branched alkanols having hydroxy groups and from 10 to 50 carbon atoms; benzoic acid esters of linear or branched C _8-22 alkanols; triglycerides of linear or branched, saturated or unsaturated, optionally hydroxylated, C _8-30 fatty acids, in particular natural oils; dicarboxylic acid esters of linear or branched C ₂ -C ₁₀ alkanols; esters of linear or branched, saturated or unsaturated fatty alcohols having 2 to 30 carbon atoms with linear or branched, saturated or unsaturated fatty acids having 2 to 30 carbon atoms, which may be hydroxylated; mono- or polyhydric C addition products of 1 to 5 propylene oxide units onto _8-22 alkanols; C8- _C22 fatty alcohol esters of mono- or _{polyhydric C2-C7 hydroxycarboxylic acids; symmetrical, asymmetrical or cyclic esters of carbonic acid with C3-22 alkanols, C3-22 alkanediols or C3-22 alkanetriols ; esters of dimers} of unsaturated _C12 - _C22 fatty acids (dimer fatty acids) with monohydric linear, branched or cyclic _C2 - _C18 alkanols or with polyhydric linear or branched _C2 - _C6 alkanols; silicone oils and mixtures of the above substances. According to the invention, particularly preferred oils are paraffin oil, natural oils, in particular amaranth seed oil, apricot kernel oil, argan oil, avocado oil, babassu oil, cottonseed oil, borage seed oil, camelina oil, safflower oil, peanut oil, pomegranate kernel oil, grapefruit seed oil, hemp oil, hazelnut oil, elderberry seed oil, currant seed oil, jojoba oil, linseed oil, macadamia nut oil, corn germ oil, almond oil, marula oil, evening primrose oil, olive oil, palm oil, palm kernel oil, Brazil nut oil, pecan nut oil, peach kernel oil, rapeseed oil. oils, castor oil, sea buckthorn pulp oil, sea buckthorn seed oil, sesame oil, soybean oil, sunflower oil, grape seed oil, walnut oil, wild rose oil, wheat germ oil and the liquid fraction of coconut oil, also synthetic triglyceride oils, in particular capric/caprylic triglycerides, also esters of linear or branched, saturated or unsaturated fatty alcohols containing 2 to 30 carbon atoms and linear or branched, saturated or unsaturated fatty acids containing 2 to 30 carbon atoms, which may be hydroxylated, in particular isopropyl palmitate and isopropyl myristate, and the abovementioned oils.

The other drugs (M1) which are preferred according to the invention and which are preferably preferentially used according to the invention are characterized in that they contain at least one polymer selected from cationic and zwitterionic polymers in a total amount of 0.1 to 2% by weight, preferably 0.2 to 1.5% by weight, particularly preferably 0.35 to 0.5% by weight, in each case based on the weight of the drug.

Surprisingly, it was found that the addition of cationic and zwitterionic polymers in a total amount of 0.1-2 wt. % further improves the cream-gel structure. Furthermore, the cationic or zwitterionic polymers lead to the fact that a further optimized viscosity for application is obtained, even after mixing with the aqueous oxidizer composition (M2).

A polymer is a macromolecule consisting of identical repeating organic units with a molecular weight of at least 1000 g/mol, preferably at least 2500 g/mol, particularly preferably at least 5000 g/mol. Polymers are produced by polymerization of one type of monomer or by polymerization of different, structurally distinct types of monomers. If one type of monomer is polymerized to produce a polymer, it is called a homopolymer. If structurally different monomer types are used in the polymerization, experts call them copolymers.

The maximum molecular weight of the polymer depends on the degree of polymerization (number of polymerized monomers) and is co-determined by the polymerization method. For the purposes of the present invention, it is preferred that the molecular weight of the zwitterionic polymer is between 100,000 and ¹⁰ g/mol, preferably between 200,000 and 5· ¹⁰ g/mol, particularly preferably between 500,000 and 1· ¹⁰ g/mol.

Zwitterionic polymers are polymers that contain both cationic and anionic groups in the polymer. The cationic groups contained in the polymer are quaternary ammonium groups. In these quaternary ammonium groups, one positively charged nitrogen atom carries four organic groups. The anionic groups are -COO ^- or -SO ₃ ^- groups.

The cationic polymers may be homopolymers, copolymers or polymers based on natural polymers, with the quaternary nitrogen group being contained in the polymer chain or preferably as a substituent of one or more monomers. Monomers containing ammonium groups may be copolymerized with non-cationic monomers. Suitable cationic monomers are unsaturated radically polymerizable compounds having at least one cationic group, in particular ammonium-substituted vinyl monomers, such as trialkylmethacryloxyalkylammonium, trialkylacryloxyalkylammonium, dialkyldiallylammonium, and quaternary vinylammonium monomers having a cyclic group containing cationic nitrogen, such as pyridinium, imidazolium or quaternary pyrrolidone, such as alkylvinylimidazolium, alkylvinylpyridinium or alkylvinylpyrrolidone salts. The alkyl groups of these monomers are preferably lower alkyl groups, such as C ₁ -C ₇ alkyl groups, particularly preferably C ₁ -C ₃ alkyl groups.

Monomers containing ammonium groups may be copolymerized with non-cationic monomers. Suitable comonomers are, for example, acrylamide, methacrylamide, alkyl and dialkyl acrylamide, alkyl and dialkyl methacrylamide, alkyl acrylate, alkyl methacrylate, vinyl caprolactone, vinyl caprolactam, vinyl pyrrolidone, vinyl ester, z. B. vinyl acetate, vinyl alcohol, propylene glycol or ethylene glycol, the alkyl groups of which are preferably C ₁ -C ₇ alkyl groups, particularly preferably C ₁ -C ₃ alkyl groups.

ここで、Ｒ２およびＲ３は独立して水素原子またはメチル基を表し、ｍは２～６までの整数、好ましくは２または３の数字であり、および基Ｒ４、Ｒ５およびＲ６は、互いに独立して、Ｃ１－Ｃ６アルキル基、好ましくは互いに独立して、メチル基、エチル基またはプロピル基を表す、このタイプの特に好ましい双性イオンポリマーは、ＤＥ３９２９９７３Ａ１、調製例１に従って調製され、ＩＮＣＩ名でアクリルアミドプロピルトリモニウムクロリド／アクリレートコポリマーとして知られている。
－高分子ジメチルジアリルアンモニウム塩およびそれらとアクリル酸およびメタクリル酸のエステルおよびアミドとのコポリマー。このタイプの特に好ましいポリマーは、ジメチルジアリルアンモニウムクロリドアクリルアミドコポリマー、特にＩＮＣＩ名ポリクアテルニウム－７を有するものである。ポリクアテルニウム－７は、例えば、市販製品Ｍｅｒｑｕａｔ（登録商標）５５０として入手可能である。このタイプの別の好ましいポリマーは、ホモポリマーポリ（ジメチルジアリルアンモニウムクロリド）、特にＩＮＣＩ名ポリクオタニウム－６のホモポリマーである。ポリクオタニウム－６は、例えば、市販製品Ｍｅｒｑｕａｔ（登録商標）１００として入手可能である。このタイプの他の好ましいポリマーは、ジメチルジアリルアンモニウムクロリド、アクリルアミド、およびアンモニウムアクリレートのターポリマー、特にＩＮＣＩ名ポリクオタニウム－３９を有するものである。ポリクオタニウム－３９は、例えば、市販製品Ｍｅｒｑｕａｔ（登録商標）３３３０およびＭｅｒｑｕａｔ（登録商標）３３３１として入手可能である。このタイプの他の好ましいポリマーは、ジメチルジアリルアンモニウムクロリドとアクリル酸のコポリマー、特にＩＮＣＩ名ポリクオタニウム－２２を有するものである。ポリクオタニウム－２２は、例えば、市販製品Ｍｅｒｑｕａｔ（登録商標）２８０として入手可能である。
－一般式－{ＣＨ_２－［ＣＲ^１ＣＯＯ－（ＣＨ_２）_ｍＮ^＋Ｒ^２Ｒ^３Ｒ^４］}_ｎＸ^－のホモポリマー、
ここで、Ｒ^１＝－Ｈまたは－ＣＨ_３、Ｒ^２、Ｒ^３およびＲ^４は、独立してＣ_１－_４アルキル、Ｃ_１－_４アルケニルまたはＣ_１－_４ヒドロキシアルキル基から選択され、ｍ＝１、２、３または４、ｎは自然数であり、Ｘ^－は生理学的に許容される有機または無機のアニオンである。これらのポリマーの文脈では、以下の条件の少なくとも１つが当てはまるものが好ましい：Ｒ^１はメチル基を表し、Ｒ^２、Ｒ^３およびＲ^４はメチル基を表し、ｍは値２を有する。生理学的に適合性のある対イオンＸ^－には、ハロゲン化物イオン、硫酸イオン、リン酸イオン、メト硫酸イオン、有機イオン、例えば、乳酸イオン、クエン酸イオン、酒石酸イオンおよび酢酸イオン、が含まれる。好ましいのは、メト硫酸イオンおよびハロゲン化物イオン、特に塩化物である。
合成ポリマーに由来する他の好ましくは適切なカチオン性ポリマーは、例えば、
Ａ１）０．１～５０％、好ましくは１０～５０％（コポリマー中のモノマーの総数に基づく）の式（ＩＶ）のモノマー

ここで、Ｘは塩化物、硫酸、メト硫酸を表す、および
Ａ２）アクリル酸、メタクリル酸およびこれらの酸のアルカリ金属塩およびアンモニウム塩からなる群から選択されるモノマー、該モノマーＡ２はコポリマーの５０～９９．９％、好ましくは５０～９０％（コポリマー中のモノマーの総数に対して）を表す
のコポリマーである。
上に示すように構造化された非常に好ましいポリマーは、ＩＮＣＩ名ポリクオタニウム－７４で市販されている。
特に適切なホモポリマーは、必要に応じて架橋された、ＩＮＣＩ名ポリクオタニウム－３７を有するポリ（メタクリロイルオキシエチルトリメチルアンモニウムクロリド）である。
－およびそれらの混合物。 Preferred cationic and zwitterionic polymers, which have proven to be particularly effective components of the inventively preferred combinations of active ingredients, are selected from the following group:
- copolymers of dimethyldiallylammonium salts and acrylic acid, such as Polyquaternium-22,
- copolymers of dimethyldiallylammonium salts and methacrylic acid,
Copolymers of N,N,N-trimethyl-3-[(2-methyl-1-oxo-2-propen-1-yl)amino]-1-propanaminium salt and acrylic acid,
Copolymers of N,N,N-trimethyl-3-[(2-methyl-1-oxo-2-propen-1-yl)amino]-1-propanaminium salt and methacrylic acid,
Copolymers of N,N,N-trimethyl-2-[(2-methyl-1-oxo-2-propen-1-yl)amino]-1-ethanaminium salt and acrylic acid,
- Copolymer of N,N,N-trimethyl-2-[(2-methyl-1-oxo-2-propen-1-yl)amino]-1-ethanaminium salt and methacrylic acid,
Copolymers of N,N,N-trimethyl-3-[(2-methyl-1-oxo-2-propen-1-yl)amino]-1-propanaminium salt, acrylic acid, and acrylamide, such as Polyquaternium-53.
-N,N,N-trimethyl-3-[(2-methyl-1-oxo-2-propen-1-yl)amino]-1-propanaminium salt, copolymer of methacrylic acid and acrylamide,
-1-ethenyl-3-methyl-1H-imidazolium salts, copolymers of 1-ethenyl-1H-imidazole, 1-ethenyl-2-pyrrolidinone and methacrylic acid, such as Polyquaternium-86;
-copolymers of 1-ethenyl-3-methyl-1H-imidazolium salts, 1-ethenyl-1H-imidazole, 1-ethenyl-2-pyrrolidinone and acrylic acid;
a copolymer containing at least one anionic structural unit of formula (II) and at least one cationic structural unit of formula (III)

where R2 and R3 independently represent a hydrogen atom or a methyl group, m is an integer from 2 to 6, preferably the number 2 or 3, and the groups R4, R5 and R6 independently of one another represent a C1-C6 alkyl group, preferably independently of one another a methyl, ethyl or propyl group. A particularly preferred zwitterionic polymer of this type is prepared according to DE 39 29 973 A1, Preparation Example 1, and is known under the INCI name Acrylamidopropyltrimonium chloride/acrylate copolymer.
- polymeric dimethyldiallylammonium salts and their copolymers with esters and amides of acrylic and methacrylic acid. Particularly preferred polymers of this type are dimethyldiallylammonium chloride acrylamide copolymers, in particular those with the INCI name Polyquaternium-7. Polyquaternium-7 is available, for example, as the commercial product Merquat® 550. Another preferred polymer of this type is the homopolymer poly(dimethyldiallylammonium chloride), in particular the homopolymer with the INCI name Polyquaternium-6. Polyquaternium-6 is available, for example, as the commercial product Merquat® 100. Other preferred polymers of this type are terpolymers of dimethyldiallylammonium chloride, acrylamide, and ammonium acrylate, in particular those with the INCI name Polyquaternium-39. Polyquaternium-39 is available, for example, as the commercial products Merquat® 3330 and Merquat® 3331. Other preferred polymers of this type are copolymers of dimethyldiallylammonium chloride and acrylic acid, especially those having the INCI designation Polyquaternium-22. Polyquaternium-22 is available, for example, as the commercial product Merquat® 280.
homopolymers of the general formula {CH ₂ —[CR ¹ COO—(CH ₂ ) _m N ⁺ R ² R ³ R ⁴ ]} _n X ^— ,
where R ¹ = -H or -CH ₃ , R ² _, R ³ and R ⁴ _are independently selected from C _1-4 alkyl, C _1-4 alkenyl or C _1-4 hydroxyalkyl groups, m = 1, ₂ , 3 or 4, n being a natural number, and X ^- is a physiologically acceptable organic or inorganic anion. In the context of these polymers, preference is given to those in which at least one of the following conditions applies: R ¹ represents a methyl group, R ² , R ³ and R ⁴ represent a methyl group and m has the value 2. Physiologically compatible counterions X ^- include halides, sulfate, phosphate, methosulfate, organic ions such as lactate, citrate, tartrate and acetate. Preference is given to methosulfate and halides, especially chloride.
Other preferably suitable cationic polymers derived from synthetic polymers are, for example:
A1) 0.1 to 50%, preferably 10 to 50% (based on the total number of monomers in the copolymer) of monomers of formula (IV)

where X represents chloride, sulfate, methosulfate, and A2) a monomer selected from the group consisting of acrylic acid, methacrylic acid and the alkali metal and ammonium salts of these acids, said monomer A2 representing 50 to 99.9%, preferably 50 to 90% (relative to the total number of monomers in the copolymer) of the copolymer.
A highly preferred polymer structured as shown above is commercially available under the INCI name Polyquaternium-74.
A particularly suitable homopolymer is poly(methacryloyloxyethyltrimethylammonium chloride), optionally crosslinked, having the INCI designation Polyquaternium-37.
- and mixtures thereof.

Other preferred or preferably used drugs according to the invention are characterized in that they contain at least one polymer selected from cationic and zwitterionic polymers in a total amount of 0.1 to 2% by weight, preferably 0.2 to 1.5% by weight, particularly preferably 0.35 to 0.5% by weight, each based on the weight of the drug.

A further agent according to the invention which is particularly preferred or which is particularly preferably used is characterized in that at least one cationic or zwitterionic polymer is selected from polyquaternium-22, polyquaternium-39, acrylamidopropyltrimonium chloride/acrylate copolymer and polyquaternium-6, and mixtures thereof, where polyquaternium-22 is very preferred, preferably the total amount of said cationic or zwitterionic polymer is 0.1-2% by weight, particularly preferably 0.2-1.5% by weight, very particularly preferably 0.35-0.5% by weight, in each case based on the weight of the agent.

A further essential feature of the present invention as a hair dye is the content of at least one oxidative dye precursor as a coloring substance.

Oxidation dye precursors can be divided into two categories based on their reaction behavior: the so-called developer components, also known as oxidation bases, and coupler components.

The coupler component alone does not form any significant color during oxidation dyeing, but always requires the presence of a developer component, which may itself form the actual dye.

Many of the developer and coupler components can be used in free form. However, for substances having amino groups, it may be preferred to use them in the form of a salt, particularly the hydrochloride or hydrobromide or sulfate.

The oxidation dye precursors include developer -type and coupler-type oxidation dye precursors. Particularly suitable developer- type oxidation dye precursors are p-phenylenediamine, p-toluenediamine, 2-(2-hydroxyethyl)-p-phenylenediamine, 2-(1,2-dihydroxyethyl)-p-phenylenediamine, N,N-bis-(2-hydroxyethyl)-p-phenylenediamine, 2-methoxymethyl-p-phenylenediamine, N-(4-amino-3-methylphenyl)-N-[3-(1H-imidazol-1-yl)propyl]amine, N,N'-bis-(2-hydroxyethyl)-N,N'-bis-(4-aminophenyl)-1,3-diamino-propan-2-ol, bis-(2-hydroxy-5-aminophenyl)methane, 1,3-bis-(2,5-diaminophenoxy)propan-2-ol, N,N'-bis-(4-aminophenyl)-1,4 -diazacycloheptane, 1,10-bis-(2,5-diaminophenyl)-1,4,7,10-tetraoxadecane, p-aminophenol, 4-amino-3-methylphenol, 4-amino-2-aminomethylphenol, 4-amino-2-(1,2-dihydroxyethyl)phenol, 4-amino-2-(diethylaminomethyl)phenol, 4,5-diamino-1-(2-hydroxyethyl)pyrazole, 2,4,5,6-tetraaminopyrimidine, 4-hydroxy-2,5,6-triaminopyrimidine, 2-hydroxy-4,5,6-triaminopyrimidine, 2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one and physiologically acceptable salts thereof. Particularly preferred developer components are selected from p-toluenediamine, 2-(2-hydroxyethyl)-p-phenylenediamine, N,N-bis-(2-hydroxyethyl)-p-phenylenediamine, 2-methoxymethyl-p-phenylenediamine, and/or 4,5-diamino-1-(2-hydroxyethyl)-pyrazole and physiologically compatible salts thereof and mixtures thereof.

Particularly suitable oxidation dye precursors of the coupler type are 3-aminophenol, 5-amino-2-methylphenol, 3-amino-2-chloro-6-methylphenol, 2-hydroxy-4-aminophenoxyethanol, 5-amino-4-chloro-2-methylphenol, 5-(2-hydroxyethyl)-amino-2-methylphenol, 2,4-dichloro-3-aminophenol, 2-aminophenol, 3-phenylenediamine, 2-(2,4-diaminophenoxy)ethanol, 1,3-bis(2,4-diaminophenoxy)propane, 1-methoxy-2-amino-4-(2-hydroxyethylamino)benzene (2-amino-4-[(2-hydroxyethyl)amino]-anisole), 1,3-bis(2,4-diaminophenyl)propane, 2,6-bis(2'-hydroxyethylamino)-1-methylbenzene, 2-({3-[(2-hydroxyethyl)amino]-4-methoxy-5-methylphenyl}amino)ethanol, 2-({3 1-amino-3-bis-(2-hydroxyethyl)aminobenzene, resorcinol, 2-methylresorcinol, 4-chloro-2-(4-methylphenyl)amino)ethanol, 2-({3-[(2-hydroxyethyl)amino]-4,5-dimethylphenyl}amino)ethanol, 2-[3-morpholin-4-ylphenyl)amino]ethanol, 3-amino-4-(2-methoxyethoxy)-5-methylphenylamine, ... The compound is selected from the group consisting of 4-hydroxyindole, 6-hydroxyindole, 7-hydroxyindole, 4-hydroxyindoline, 6-hydroxyindoline, 7-hydroxyindoline or mixtures of these compounds or physiologically acceptable salts thereof. Particularly preferred coupler components are selected from 3-aminophenol, 5-amino-2-methylphenol, 3-amino-2-chloro-6-methylphenol, 2-hydroxy-4-aminophenoxyethanol, 2-(2,4-diaminophenoxy)ethanol, 1-methoxy-2-amino-4-(2-hydroxyethylamino)benzene (2-amino-4-[(2-hydroxyethyl)amino]-anisole), resorcinol, 2-methylresorcinol, 4-chlororesorcinol, 2-amino-3-hydroxypyridine, and physiologically acceptable salts thereof, and mixtures thereof.

In a preferred embodiment, the coloring agent according to the invention contains one or more oxidation dye precursors in a total amount of 0.005 to 12% by weight, preferably 0.1 to 7% by weight, more preferably 0.5 to 5% by weight, more preferably 0.7 to 2.5% by weight, very particularly preferably 1 to 1.8% by weight, based on the weight of the coloring agent according to the invention or the weight of the composition (M1) used according to the invention.

In a preferred embodiment, the colouring agent of the invention contains one or more oxidation dye precursors selected from at least one developer component and optionally at least one coupler component in a total amount of 0.005 to 12% by weight, preferably 0.1 to 7% by weight, more preferably 0.5 to 5% by weight, more preferably 0.7 to 2.5% by weight and very particularly preferably 1 to 1.8% by weight, based on the weight of the colouring agent according to the invention or of the composition (M1) used according to the invention.

Based on each individual oxidation dye precursor, it is preferably contained in an amount of 0.005 to 5% by weight, particularly preferably 0.01 to 4% by weight, and very particularly preferably 0.1 to 2% by weight, based on the weight of the agent.

In a further preferred embodiment of the present invention, the agent of the present invention contains at least one direct dye.

In oxidative hair whiteners and hair dyes for lighter shades, direct dyes are often used to remove unwanted reddish tones that may be caused by melanin breakdown products, or for certain blonde shades.

To obtain a balanced nuance, the present invention may also provide that the cosmetic product containing OFV further contains at least one direct dye.

Direct dyes are dyes that are applied directly to the hair and do not require an oxidation process to develop color. Direct dyes are usually nitrophenylenediamines, nitroaminophenols, azo dyes, anthraquinones, or indophenols.

Direct dyes can be classified as anionic direct dyes, cationic direct dyes, and nonionic direct dyes.

Preferred anionic direct dyes are the compounds known under the names Acid Yellow 1, Yellow 10, Acid Yellow 23, Acid Yellow 36, Acid Orange 7, Acid Red 33, Acid Red 52, Pigment Red 57:1, Acid Blue 7, Acid Green 50, Acid Violet 43, Acid Black 1, Acid Black 52, and Tetrabromophenol Blue.

Preferred cationic direct dyes are cationic triphenylmethane dyes such as Basic Blue 7, Basic Blue 26, Basic Violet 2 and Basic Violet 14, and aromatics substituted with quaternary nitrogen groups such as Basic Yellow 57, Basic Red 76, Basic Blue 99, Basic Brown 16, Basic Brown 17, and HC Blue 16, as well as Basic Yellow 87, Basic Orange 31, Basic Red 51.

Preferred nonionic direct dyes are HC Yellow 2, HC Yellow 4, HC Yellow 5, HC Yellow 6, HC Yellow 12, HC Orange 1, Disperse Orange 3, HC Red 1, HC Red 3, HC Red 10, HC Red 11, HC Red 13, HC Red BN, HC Blue 2, HC Blue 11, HC Blue 12, Disperse Blue 3, HC Violet 1, Disperse Violet 1, Disperse Violet 4, Disperse Black 9, and 1.4-diamino-2-nitrobenzene, 2-amino-4-nitrophenol, 1.4-To-(2-hydroxyethyl)amino-2-nitrobenzene, 3-nitro-4-(2-hydroxyethyl)aminophenol, 2-(2 1-amino-4-(2-hydroxyethyl)amino-4,6-dinitrophenol, 4-[(2-hydroxyethyl)amino]-3-nitro-1-methylbenzene, 1-amino-4-(2-hydroxyethyl)amino-5-chloro-2-nitrobenzene, 4-amino-3-nitrophenol, 1-(2'-ureidoethyl)amino-4-nitrobenzene, 2-[(4-amino-2-nitrophenyl)amino]benzoic acid, 6-nitro-1,2,3,4-tetrahydroquinoxaline, 2-hydroxy-1,4-naphthoquinone, picramic acid and its salts, 2-amino-6-chloro-4-nitrophenol, 4-ethylamino-3-nitrobenzoic acid and 2-chloro-6-ethylamino-4-nitrophenol.

Furthermore, natural dyes such as henna red, henna neutral, henna black, chamomile flower, sandalwood, black tea, walnut, rotten bark, sage, bluewood, madder root, catechu, and alkan root may also be used as direct dyes.

Preferably, the cosmetic composition contains at least one direct dye in a total amount of 0.001 to 10% by weight, preferably 0.01 to 8% by weight, preferably 0.1 to 5% by weight, in particular 0.5 to 2% by weight, in each case based on the weight of the cosmetic composition or composition (M1) used according to the invention.

Surprisingly, it has been found that the addition of 4-hydroxyacetophenone improves the dyeing or brightening result. Other preferred hair whitening or dyeing agents according to the invention are therefore characterized by the fact that they contain 4-hydroxyacetophenone. Preferably, the cosmetic product contains 0.001 to 2% by weight, preferably 0.01 to 1% by weight, preferably 0.1 to 0.6% by weight, in particular 0.2 to 0.4% by weight of 4-hydroxyacetophenone, in each case based on the weight of the cosmetic product or composition (M1) used according to the invention.

Another object of the invention is a packaging unit (kit of parts) comprising (packaged separately):
a) in each case based on its weight,
- 70 to 90% by weight, preferably 73 to 86% by weight, particularly preferably 76 to 84% by weight, of water,
- at least one alkalizing agent,
- at least one crosslinked copolymer composed of acrylic acid and non-ethoxylated esters of acrylic acid with linear C10-C30 monoalcohols as monomers, said crosslinked copolymer being present in a total amount of 0.2 to 0.6% by weight, preferably 0.3 to 0.5% by weight, particularly preferably 0.4 to 0.45% by weight,
- 0.3 to 1.5% by weight, preferably 0.4 to 1.2% by weight, particularly preferably 0.5 to 1.0% by weight and very particularly preferably 0.6 to 0.8% by weight of at least one linear saturated 1-alkanol having one hydroxy group and 8 to 22 carbon atoms,
- at least one anionic surfactant in a total amount of 1 to 6% by weight, preferably 2 to 5% by weight, particularly preferably 2.5 to 4.5% by weight, and sodium polyacrylate, preferably with a weight-average molar mass Mw in the range from 1,000,000 to 20,000,000 Daltons, particularly preferably from 6,000,000 to 15,000,000 Daltons, in a total amount of preferably 0.1 to 1.5% by weight, particularly preferably 0.5 to 1.3% by weight and very particularly preferably 0.8 to 1.1% by weight, in each case based on the weight of the drug, said sodium polyacrylate being particularly preferably contained in a pregelled state in a water-in-oil emulsion,
- Optionally, at least one coloring substance selected from oxidative dye precursors, direct action hair dyes and mixtures thereof;
At least one container (C1) containing an oxidative hair coloring agent containing
No oxidizing agent is present in the agent, and further characterized in that each of the agents has a pH value measured at 20° C. in the range of 7.5 to 9.5, preferably in the range of 8.0 to 9.0.
a) at least one container (C2) containing an oxidizing agent preparation (M2), which contains 40 to 96% by weight, preferably 70 to 93% by weight, particularly preferably 80 to 90% by weight of water and also 0.5 to 23% by weight, more preferably 2.5 to 13% by weight, particularly preferably 3 to 10% by weight, very particularly preferably 6 to 9% by weight of hydrogen peroxide in a total amount, and which has a pH value in the range from 2.0 to 6.5, preferably from 2.5 to 5.5, particularly preferably from 2.8 to 5.0, measured in each case at 20° C.,
Optionally, at least one copolymer selected from crosslinked acrylic acid/acrylic acid-C1-C6-alkyl ester copolymers and crosslinked methacrylic acid/acrylic acid-C1-C6-alkyl ester copolymers may be present, preferably in a total amount of 0.1 to 7% by weight, particularly preferably 0.5 to 6% by weight, very particularly preferably 1 to 4.5% by weight,
The weight percentages here are based in each case on the weight of the oxidizer preparation (M2).

Another subject of the present invention is a process for oxidative hair dyeing, comprising the following process steps:
i)
- 70 to 90% by weight, preferably 73 to 86% by weight, particularly preferably 76 to 84% by weight, of water,
- at least one alkalizing agent,
- at least one crosslinked copolymer composed of acrylic acid and non-ethoxylated esters of acrylic acid with linear C10-C30 monoalcohols as monomers, said crosslinked copolymer being present in a total amount of 0.2 to 0.6% by weight, preferably 0.3 to 0.5% by weight, particularly preferably 0.4 to 0.45% by weight,
- 0.3 to 1.5% by weight, preferably 0.4 to 1.2% by weight, particularly preferably 0.5 to 1.0% by weight and very particularly preferably 0.6 to 0.8% by weight of at least one linear saturated 1-alkanol having one hydroxy group and 8 to 22 carbon atoms,
- at least one anionic surfactant in a total amount of 1 to 6% by weight, preferably 2 to 5% by weight, particularly preferably 2.5 to 4.5% by weight, and sodium polyacrylate, preferably with a weight-average molar mass Mw in the range from 1,000,000 to 20,000,000 Daltons, particularly preferably from 6,000,000 to 15,000,000 Daltons, in a total amount of preferably 0.1 to 1.5% by weight, particularly preferably 0.5 to 1.3% by weight and very particularly preferably 0.8 to 1.1% by weight, in each case based on the weight of the drug, said sodium polyacrylate being particularly preferably contained in a pregelled state in a water-in-oil emulsion,
- Optionally, at least one coloring substance selected from oxidative dye precursors, direct action hair dyes and mixtures thereof,
Preparation of a cosmetic composition (M1) for oxidative dyeing of keratin fibers, comprising:
no oxidizing agent is present in said composition, and further characterized in that the pH value of the agent, each measured at 20° C., is in the range of 7.5 to 9.5, preferably in the range of 8.0 to 9.0;
ii) Preparation of an oxidizer preparation (M2) containing 40-96% by weight, preferably 70-93% by weight, more preferably 80-90% by weight of water and furthermore 0.5-23% by weight of hydrogen peroxide in a total amount, preferably 70-93% by weight, more preferably 80-90% by weight of water and furthermore 0.5-23% by weight of hydrogen peroxide in a total amount, preferably 2.5-13% by weight, more preferably 3-10% by weight, particularly preferably 6-9% by weight, and a pH value, measured at 20° C., in each case in the range of 2.0 to 6.5, preferably 2.5 to 5.5, particularly preferably 2.8 to 5.0. Optionally, at least one copolymer selected from crosslinked acrylic acid/acrylic acid-C1-C6-alkyl ester copolymers and crosslinked methacrylic acid/acrylic acid-C1-C6-alkyl ester copolymers may be present, preferably in a total amount of 0.1 to 7% by weight, particularly preferably 0.5 to 6% by weight and very particularly preferably 1 to 4.5% by weight, in each case based on the weight of the oxidizer preparation (M2),
iii) mixing of the cosmetic composition (M1) with the oxidizing agent preparation (M2), preferably in a weight ratio (M1):(M2) in the range of 0.2:1: to 3:1, preferably 0.3:1 to 2.5:1, particularly preferably 1:1 to 1.5:1, immediately followed by iv) applying the mixture obtained in step iii) to the hair and leaving the mixture on the hair for 1 to 60 minutes, preferably 20 to 45 minutes, at room temperature and/or 30 to 60° C.,
v) rinsing the hair with water and/or the cleansing composition; and vi) optionally applying a post-treatment to the hair, rinsing as required, and then drying.
Said method is characterized in that said coating mixtures of (M1) and (M2), each having a pH value, measured at 20° C., in the range of 6.0 to 8.0, preferably in the range of 6.5 to 7.5.

In the case of an oxidative hair whitening or dyeing process, the composition according to the invention (M1), optionally containing one or more oxidative dye precursors and optionally one or more direct dyes, is usually mixed with an aqueous composition (M2) containing an oxidizing agent to form a ready-to-use whitening or dyeing composition immediately before application to the hair, which is then applied to the hair. In most cases, the agent (M1) of the invention and the oxidizing agent-containing composition (M2) are blended with each other in a 1:1 mixing ratio based on parts by weight, so that in the finished application mixture, an initial concentration of hydrogen peroxide (calculated as 100% H ₂ O ₂ ) of 0.5 to 12% by weight, preferably 0.9 to 7% by weight, particularly preferably 1.5 to 5% by weight, exceptionally 2.5 to 4% by weight, based on the weight of the application mixture, is obtained. However, as mentioned above, it is likewise possible to formulate the agent (M1) of the invention and the oxidizing agent-containing composition (M2) in such a way that the required concentration in the ready-to-use oxidative coloring agent (application mixture) is obtained by a mixing ratio other than 1:1, for example a mixing ratio of 5:2 or 1:2 or 1:3, or even 2:3 or 3:1 by weight.

According to the invention, the preferred weight-related mix ratio (M1):(M2) is in the range of 0.2:1 to 3:1, preferably 0.3:1 to 2.5:1, particularly preferably 1:1 to 1.5:1.

The oxidative hair brightening or dyeing kit according to the present invention is characterized in that the finished application mixtures of (M1) and (M2) each have a pH value in the range of 6.0 to 8.0, preferably in the range of 6.5 to 7.5, measured at 20°C.

According to the present invention, the term "room temperature" refers to the temperature of the room where a person normally uses a hair whitening or coloring product, i.e. the temperature of a bathroom or beauty salon, where the temperature is usually in the range of 10-29°C.

In the hair brightening or hair colouring method according to the invention or preferred according to the invention, the leaving on of the hair brightening or hair colouring application mixture in process step iv) can also be carried out at a temperature of at least 30°C, preferably 30 to 60°C, particularly preferably 32 to 50°C, if the hair is heated, for example with a heating bonnet or a radiant heater.

The oxidizing agent preparation (M2) used in the dyeing kit according to the present invention and the preferred invention and in the dyeing method according to the present invention and the preferred invention contains, based on its weight, 40 to 96% by weight, preferably 70 to 93, particularly preferably 80 to 90% by weight of water.

The oxidizing agent preparation (M2) used in the dyeing kit according to the invention and the preferred invention and in the dyeing method according to the invention and the preferred invention further contains, in each case based on its weight, 0.5 to 23% by weight, more preferably 2.5 to 13% by weight, particularly preferably 3 to 10% by weight and very particularly preferably 6 to 9% by weight of hydrogen peroxide.

To stabilize hydrogen peroxide, the oxidizer preparation (M2) has a pH value in the range of 2.0 to 6.5, preferably 2.5 to 5.5, particularly preferably 2.8 to 5.0, each measured at 20°C.

The viscosity of the preferred agents (M1) according to the invention is in the range of 3000-25,000 mPas, preferably 4000-20,000 mPas, particularly preferably 6000-12,000 mPas, each measured at 20 ° C with a Haake VT 550 viscometer, system SV, making this agent very suitable for handling itself (dosing, filling, production for producing mixtures with oxidizer preparations). The oxidizer preparations (M2) usually have a low viscosity in the range of 10-6000 mPas, preferably 200-5000 mPas, particularly preferably 1000-4500 mPas, each measured at 20 ° C. However, for application to hair, the application mixture should have a significantly higher viscosity so that it remains on the hair for the entire application time (in the range of 5-60 minutes, preferably 30-45 minutes) and does not drip off. A distinction is made whether the application mixture is prepared by shaking both compositions (M1) and (M2) in an application bottle, from which the application mixture is applied to the hair immediately after mixing with the aid of an application spout as a bottle top (bottle application), or whether the application mixture is prepared by mixing both compositions (M1) and (M2) in a bowl, from which the application mixture is applied to the hair with a brush immediately after mixing (brush application). Bottle application is particularly suitable for coloring agents sold in retail stores, where the consumer's own use is recommended. Brush application is particularly suitable for whitening and coloring products, which are prepared by a hairdresser in a beauty salon and applied to the consumer's hair.

Surprisingly, it has been found that by mixing the agent (M1) according to the invention or the preferred invention with an oxidizer preparation (M2) containing a total of 0.05 to 2% by weight, preferably 0.3 to 1.5% by weight of at least one niotenside, a total of 1 to 5% by weight, preferably 1.5 to 4% by weight of at least one linear saturated 1-alkanol having 14 to 22 carbon atoms selected from 1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetyl alcohol), 1-octadecanol (stearyl alcohol), 1-eicosanol (arachyl alcohol) and 1-docosanol (behenyl alcohol) and mixtures thereof, and further a total of 0.2 to 10% by weight, preferably 1 to 5% by weight, particularly preferably 2 to 4% by weight of at least one oil (all amounts based on the weight of the oxidizer preparation (M2)), an application mixture having a viscosity particularly suitable for bottle application is obtained.

It is particularly preferred that this oxidizing agent preparation (M2) does not contain cationic surfactants or polymers having a degree of polymerization of at least 200 or polymers having a molecular weight of 10,000 Daltons or more.

The non-ionic surfactant used in the oxidizing agent preparation (M2) used according to the present invention is selected from the same surfactants as the niotonic acid contained in the agent (M1) used according to the present invention and is selected for use according to the present invention.

For the purposes of this application, the above linear saturated 1-alkanols having one hydroxyl group are not considered to be surfactants, even with respect to the oxidizing preparation (M2).

The at least one oil, which is present in the oxidizer preparation (M2) in a total amount of 0.2 to 10% by weight, preferably 1 to 5% by weight, particularly preferably 2 to 4% by weight, in each case based on the weight of said preparation (M2), is preferably natural and synthetic hydrocarbons, particularly preferably mineral oils, paraffin oils, C ₁₈ -C ₃₀ isoparaffins, in particular isoeicosane, polyisobutene and polydecene, C ₈ -C ₁₆ isoparaffins and 1,3-di(2-ethylhexyl)cyclohexane; branched alkanols containing hydroxy groups and from 10 to 50 carbon atoms; benzoic acid esters of linear or branched C _8-22 alkanols; linear or branched, saturated or unsaturated, optionally hydroxylated triglycerides of C _8-30 fatty acids, in particular natural oils; linear or branched C ₂ -C dicarboxylic acid esters of _10- alkanols; esters of linear or branched, saturated or unsaturated fatty alcohols having 2 to 30 carbon atoms and linear or branched, saturated or unsaturated fatty acids having 2 to 30 carbon atoms, which may be hydroxylated; addition products of 1 to 5 propylene oxide units to mono- or polyhydric C _8-22 -alkanols; C ₈ -C ₂₂ fatty alcohol esters of mono- or polyhydric C ₂ -C ₇ hydroxycarboxylic acids; symmetrical, asymmetrical or cyclic esters of carbonic acid with C _3-22 alkanols, C _3-22 alkanediols or C _3-22 alkanetriols; esters of dimers of unsaturated C ₁₂ -C ₂₂ fatty acids (dimer fatty acids) with monovalent linear, branched or cyclic C ₂ -C ₁₈ alkanols or with polyvalent linear or branched C ₂ -C ₆ alkanols; silicone oils and mixtures of the above substances. Particularly preferred oils in this context according to the invention are selected from paraffin oil and esters of linear or branched, saturated or unsaturated fatty alcohols having 2 to 30 carbon atoms, which may be hydroxylated, with linear or branched, saturated or unsaturated fatty acids having 2 to 30 carbon atoms, and mixtures thereof; very preferably selected from paraffin oil, isopropyl palmitate and isopropyl myristate, and mixtures thereof.

When the agent according to the invention or the preferred invention is mixed with such an oxidizing agent preparation (M2), the desired application viscosity and therefore optimal application properties are obtained. The application mixture thus obtained has a mixing ratio (M1):(M2) particularly relative to the weight in the range of 0.2:1: to 3:1, preferably 0.3:1 to 2.5:1, particularly preferably 1:1 to 1.5:1, and preferably a viscosity (Haake VT 550 rotational viscometer, measuring system MV II) in the range of 3,000 to 30,000 mPas, preferably 4,000 to 20,000 mPas, in particular 7,000 to 10,000 mPas, each measured at 20 ° C.

Thus, a further preferred packaging unit (kit of parts) according to the invention is characterized in that the oxidizer preparation (M2) contains at least one niothenside in a total amount of 0.05 to 2% by weight, preferably 0.3 to 1.5% by weight, at least one linear saturated 1-alkanol having 14 to 22 carbon atoms selected from 1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetyl alcohol), 1-octadecanol (stearyl alcohol), 1-eicosanol (arachyl alcohol) and 1-docosanol (behenyl alcohol) and mixtures thereof in a total amount of 1 to 5% by weight, preferably 1.5 to 4% by weight, and further contains at least one oil in a total amount of 0.2 to 10% by weight, preferably 1 to 5% by weight, particularly preferably 2 to 4% by weight. All quantitative data here refer to the weight of the oxidizer preparation (M2). It is particularly preferred that the oxidizing agent preparation (M2) does not contain a cationic surfactant, does not contain a polymer having a degree of polymerization of at least 200, and does not contain a polymer having a molecular weight of 10,000 daltons or more.

In another embodiment of the invention, it may be preferable to mix the agent (M1) according to the invention or the preferred invention with an oxidizer preparation (M2) which contains at least one copolymer selected from crosslinked acrylic acid/acrylic acid-C1-C6-alkyl ester copolymers and crosslinked methacrylic acid/acrylic acid-C1-C6-alkyl ester copolymers, preferably in a total amount of 0.1 to 7% by weight, particularly preferably 0.5 to 6% by weight, very particularly preferably 1 to 4.5% by weight, in each case based on the weight of the oxidizer preparation (M2). When the agent according to the invention or the preferred invention is mixed with such an oxidizer preparation (M2), the desired application viscosity and thus optimal application properties are obtained. The coating mixture thus obtained has a mixing ratio, particularly relative to weight, (M1):(M2) in the range of 0.2:1: to 3:1, preferably 0.3:1 to 2.5:1, particularly preferably 1:1 to 1.5:1, and preferably a viscosity, measured in each case at 20°C (Haake VT 550 rotational viscometer, measuring system MV II), in the range of 3.000 to 30,000 mPas, preferably 4,000 to 20,000 mPas, in particular 7,000 to 10,000 mPas.

Thus, a further preferred packaging unit (kit of parts) according to the invention is characterized in that the oxidizer preparation (M2) contains at least one copolymer selected from crosslinked acrylic acid/acrylic acid-C1-C6-alkyl ester copolymers and crosslinked methacrylic acid/acrylic acid-C1-C6-alkyl ester copolymers, preferably in a total amount of 0.1 to 7% by weight, particularly preferably 0.5 to 6% by weight, very particularly preferably 1 to 4.5% by weight, in each case based on the weight of the oxidizer preparation (M2), and preferably does not contain a cationic surfactant.

Thus, a further method for oxidative hair whitening or hair colouring which is preferred according to the invention is characterised in that the oxidant preparation (M2) contains at least one copolymer selected from crosslinked acrylic acid/acrylic acid-C1-C6-alkyl ester copolymers and crosslinked methacrylic acid/acrylic acid-C1-C6-alkyl ester copolymers, preferably in a total amount of 0.1 to 7% by weight, particularly preferably 0.5 to 6% by weight, very particularly preferably 1 to 4.5% by weight, in each case based on the weight of the oxidant preparation (M2), and preferably does not contain a cationic surfactant.

Preferred crosslinked copolymers of this type are selected from -individually crosslinked- methacrylic acid/methyl acrylate, methacrylic acid/ethyl acrylate, methacrylic acid/propyl acrylate, methacrylic acid/butyl acrylate, methacrylic acid/pentyl acrylate, methacrylic acid/hexyl acrylate, acrylic acid/methyl acrylate, acrylic acid/ethyl acrylate, acrylic acid/propyl acrylate, acrylic acid/butyl acrylate, acrylic acid/pentyl acrylate and acrylic acid/hexyl acrylate copolymers and mixtures thereof.

A further preferred packaging unit (kit of parts) according to the invention is characterized in that the oxidizer preparation (M2) contains at least one crosslinked copolymer selected from -in each case crosslinked- methacrylic acid/methyl acrylate, methacrylic acid/ethyl acrylate, methacrylic acid/propyl acrylate, methacrylic acid/butyl acrylate, methacrylic acid/pentyl acrylate, methacrylic acid/hexyl acrylate, acrylic acid/methyl acrylate, acrylic acid/ethyl acrylate, acrylic acid/propyl acrylate, acrylic acid/butyl acrylate, acrylic acid/pentyl acrylate and acrylic acid/hexyl acrylate copolymers and mixtures thereof in a total amount of 0.1 to 7% by weight, particularly preferably 0.5 to 6% by weight, very particularly preferably 1 to 4.5% by weight, in each case based on the weight of the oxidizer preparation (M2), and does not contain a cationic surfactant.

Another preferred method according to the invention for oxidative hair lightening or hair coloring is characterized in that the oxidant preparation (M2) contains at least one crosslinked copolymer selected from -in each case crosslinked- methacrylic acid/methyl acrylate, methacrylic acid/ethyl acrylate, methacrylic acid/propyl acrylate, methacrylic acid/butyl acrylate, methacrylic acid/pentyl acrylate, methacrylic acid/hexyl acrylate, acrylic acid/methyl acrylate, acrylic acid/ethyl acrylate, acrylic acid/propyl acrylate, acrylic acid/butyl acrylate, acrylic acid/pentyl acrylate and acrylic acid/hexyl acrylate copolymers and mixtures thereof in a total amount of 0.1 to 7% by weight, particularly preferably 0.5 to 6% by weight, very particularly preferably 1 to 4.5% by weight, in each case based on the weight of the oxidant preparation (M2), and does not contain cationic surfactants.

The oxidizing agent preparation (M2) used in the other preferred whitening or staining kits according to the invention and in the preferred whitening or staining methods according to the invention contains at least one surfactant selected from anionic and nonionic surfactants and mixtures thereof in a total amount of 0.05 to 2% by weight, preferably 0.3 to 1.5% by weight, and at least one linear saturated 1-alkanol having 14 to 22 carbon atoms selected from 1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetyl alcohol), 1-octadecanol (stearyl alcohol), 1-eicosanol (aratyl alcohol) and 1-docosanol and mixtures thereof in a total amount of 1 to 5% by weight, preferably 1.5 to 4% by weight. All amounts are based on the weight of the oxidizing agent preparation (M2).

The anionic and nonionic surfactants used in the oxidizing agent preparation (M2) used according to the invention are selected from the same surfactants as those selected in the preparation (M1) used according to the invention and the anionic and nonionic surfactants contained in the preparation used according to the invention.

For the purposes of this application, the above linear saturated 1-alkanols having one hydroxyl group are not considered surfactants, even with respect to the oxidizer preparation (M2).

In a further preferred embodiment of the invention, the oxidizer preparation (M2) used according to the invention contains at least one oil in a total amount of 0.2 to 50% by weight, preferably 2 to 40% by weight, particularly preferably 8 to 30% by weight and very particularly preferably 15 to 25% by weight, in each case based on the weight of the oxidizer preparation (M2).

The at least one oil present in the oxidizer preparation (M2) in a total amount of 0.2 to 50% by weight, preferably 2 to 40% by weight, particularly preferably 8 to 30% by weight and very particularly preferably 15 to 25% by weight, in each case based on the weight of said preparation (M2), is preferably selected from natural and synthetic hydrocarbons, particularly preferably mineral oils, paraffin oils, C ₁₈ -C ₃₀ isoparaffins, in particular isoeicosane, polyisobutene and polydecene, C ₈ -C ₁₆ isoparaffins and 1,3-di(2-ethylhexyl)-cyclohexane; branched alkanols containing hydroxy groups and from 10 to 50 carbon atoms; benzoic acid esters of linear or branched C _8-22 alkanols; linear or branched, saturated or unsaturated, optionally hydroxylated triglycerides of C _8-30 fatty acids, in particular natural oils; linear or branched C ₂ -C dicarboxylic acid esters of _10- alkanols; esters of linear or branched, saturated or unsaturated fatty alcohols having 2 to 30 carbon atoms, which may be hydroxylated, with linear or branched, saturated or unsaturated fatty acids having 2 to 30 carbon atoms, which may be hydroxylated; addition products of 1 to 5 propylene oxide units onto mono- or polyhydric C _8-22 alkanols; C ₈ -C ₂₂ fatty alcohol esters of mono- or polyhydric C ₂ -C ₇ hydroxycarboxylic acids; symmetrical, asymmetrical or cyclic esters of carbonic acid with C _3-22 alkanols, C _3-22 alkanediols or C _3-22 alkanetriols; esters of dimers of unsaturated C ₁₂ -C ₂₂ fatty acids (dimer fatty acids) with monovalent linear, branched or cyclic C ₂ -C ₁₈ alkanols or with polyvalent linear or branched C ₂ -C ₆ alkanols; silicone oils and mixtures of the above substances. Particularly preferred oils in this context according to the invention are selected from paraffin oil and esters of linear or branched, saturated or unsaturated fatty alcohols having 2 to 30 carbon atoms and linear or branched, saturated or unsaturated fatty acids having 2 to 30 carbon atoms, which may be hydroxylated, and mixtures thereof; very preferably selected from paraffin oil, isopropyl palmitate and isopropyl myristate, and mixtures thereof.

A preferred further packaging unit (kit of parts) according to the invention and a preferred further hair brightening or dyeing method according to the invention, respectively, are characterized in that the oxidant preparation (M2) contains at least one oil in a total amount of 0.2 to 50% by weight, preferably 2 to 40% by weight, particularly preferably 8 to 30% by weight, very particularly preferably 15 to 25% by weight, in each case based on the weight of the oxidant preparation (M2), but does not contain a cationic surfactant.

A preferred further packaging unit (kit of parts) according to the invention and a preferred further hair whitening or dyeing method according to the invention, respectively, are characterized in that the oxidizer preparation (M2) contains at least one oil in a total amount of 0.2 to 50% by weight, preferably 2 to 40% by weight, particularly preferably 8 to 30% by weight, very particularly preferably 15 to 25% by weight, in each case based on the weight of the oxidizer preparation (M2), but does not contain any polymers with a degree of polymerization of at least 200 and does not contain any polymers with a molecular weight of 10,000 daltons or more.

A preferred further packaging unit (kit of parts) according to the invention and a preferred further hair whitening or dyeing method according to the invention, respectively, are characterized in that the oxidizer preparation (M2) contains at least one oil in a total amount of 0.2 to 50% by weight, preferably 2 to 40% by weight, particularly preferably 8 to 30% by weight, very particularly preferably 15 to 25% by weight, in each case based on the weight of the oxidizer preparation (M2), but does not contain cationic surfactants, polymers with a degree of polymerization of at least 200 or polymers with a molecular weight of 10,000 daltons or more.

In another preferred embodiment of the present invention, it has been found that application mixtures with a viscosity particularly suitable for brush application can be obtained by mixing an agent (M1) according to the present invention or the preferred invention with an oxidizing agent preparation (M2) containing at least one cationic surfactant. During mixing, the interaction between the at least one crosslinked copolymer of acrylic acid and a non-ethoxylated ester of acrylic acid with a linear C10-C30 monoalcohol and the at least one cationic surfactant results in the desired increase in viscosity. The resulting viscosity of the application mixture leads to optimal application properties.

In a further preferred embodiment of the invention, the oxidizer preparation (M2) used according to the invention contains at least one cationic surfactant, preferably in a total amount of 0.05 to 3% by weight, particularly preferably 0.1 to 1.5% by weight and very particularly preferably 0.3 to 0.9% by weight, in each case based on the weight of the oxidizer preparation (M2).

Cationic surfactants are surfactants, i.e., surface-active compounds, each of which has one or more positive charges. Cationic surfactants contain only positive charges. Typically, these surfactants consist of a hydrophobic portion and a hydrophilic head group, where the hydrophobic portion usually consists of a hydrocarbon backbone (e.g., one or two linear or branched alkyl chains), and the positive charge is located in the hydrophilic head group. Cationic surfactants adsorb to interfaces and aggregate in aqueous solutions above the critical micelle formation concentration to form positively charged micelles.

According to the invention, cationic surfactants of the type quaternary ammonium compounds, ester quats and alkyl amidoamines are preferred. Preferred quaternary ammonium compounds are ammonium halides such as alkyl trimethyl ammonium chloride, dialkyl dimethyl ammonium chloride, trialkyl methyl ammonium chloride, as well as imidazolium compounds known under the INCI names Quaternium-27 and Quaternium-83.

Other preferred quaternary ammonium compounds are tetraalkylammonium salts, in particular those known by the INCI name Quaternium-52, poly(oxy-1,2-ethanediyl), ((octadecylnitrile)tri-2,1-ethanediyl)tris(hydroxy)phosphate (1:1) salt, which has the general structural formula (III) where x+y+z=10:

The long-chain alkyl of the abovementioned surfactants preferably has 10 to 22, particularly preferably 12 to 18 carbon atoms. Particularly preferred are behenyl trimethyl ammonium chloride, stearyl trimethyl ammonium chloride and cetyl trimethyl ammonium chloride, with stearyl trimethyl ammonium chloride being very particularly preferred. Further suitable cationic surfactants according to the invention are quaternized protein hydrolysates. Alkyl amidoamines are usually produced by amidation of natural or synthetic fatty acids and fatty acid cut with dialkylaminoamines. Tegoamid® S18 (stearamidopropyl dimethylamine) is a suitable compound from this group of substances. Ester quats are substances which contain both at least one ester group and at least one quaternary ammonium group as structural elements. Preferred ester quats are quaternized ester salts of fatty acids with triethanolamine, quaternized ester salts of fatty acids with diethanol alkylamines and quaternized ester salts of fatty acids with 1.2-dihydroxypropyl dialkylamine. Such products are sold under the trademarks Stepantex, Dehyquart, and Armocare.

C10-C22-alkyltrimethylammonium chlorides have proven to be particularly suitable in terms of optimal application properties and optimal brightening or dyeing results. The particularly preferred oxidizer preparations (M2) used according to the invention are therefore characterized in that the at least one cationic surfactant is present in a total amount of 0.05 to 3% by weight, particularly preferably 0.1 to 1.5% by weight, 0.3 to 0.9% by weight, in each case based on the weight of the oxidizer preparation (M2), preferably at least one surfactant is selected from C10-C22-alkyltrimethylammonium chlorides, in particular behenyltrimethylammonium chloride, stearyltrimethylammonium chloride and cetyltrimethylammonium chloride, and mixtures of these surfactants. Highly preferred oxidizer preparations (M2) used according to the invention contain stearyltrimethylammonium chloride in a total amount of 0.05 to 3% by weight, particularly preferably 0.1 to 1.5% by weight, very particularly preferably 0.3 to 0.9% by weight, in each case based on the weight of the oxidizer preparation (M2).

A preferred further packaging unit (kit of parts) according to the invention and a preferred further brightening or hair dyeing method according to the invention, respectively, are characterized in that the oxidant preparation (M2) contains at least one cationic surfactant, preferably in a total amount of 0.05 to 3% by weight, particularly preferably 0.1 to 1.5% by weight, very particularly preferably 0.3 to 0.9% by weight, in each case based on the weight of the oxidant preparation (M2).

A preferred further packaging unit (kit of parts) according to the invention and a preferred further hair whitening or dyeing method according to the invention, respectively, are characterized in that the oxidant preparation (M2) contains at least one cationic surfactant, preferably in a total amount of 0.05 to 3 wt.-%, particularly preferably 0.1 to 1.5 wt.-%, very particularly preferably 0.3 to 0.9 wt.-%, in each case based on the weight of the oxidant preparation (M2), but does not contain any polymers with a degree of polymerization of at least 200 and does not contain any polymers with a molecular weight of 10,000 daltons or more.

It has been found that the thickening due to the interaction between the copolymer in the agent of the invention and the cationic surfactant in the oxidizing agent preparation (M2) is sufficient and the presence of a polymer with a degree of polymerization of at least 200 or a polymer with a molecular weight of 10,000 Daltons or more cannot further increase or even impair its application properties.

A preferred further packaging unit (kit of parts) according to the invention and a preferred further hair whitening or dyeing method according to the invention, respectively, are characterized in that the oxidant preparation (M2) contains at least one surfactant selected from anionic and nonionic surfactants and mixtures thereof in a total amount of 0.05 to 2% by weight, preferably 0.3 to 1.5% by weight, and at least one linear saturated 1-alkanol having 14 to 22 carbon atoms selected from 1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetyl alcohol), 1-octadecanol (stearyl alcohol) and 1-eicosanol (arachyl alcohol) and mixtures thereof in a total amount of 1 to 5% by weight, preferably 1.5 to 4% by weight. In each case based on the weight of the oxidant preparation (M2).

A preferred further packaging unit (kit of parts) according to the invention and a preferred further hair whitening or dyeing method according to the invention, respectively, are characterized in that the oxidant preparation (M2) contains a total of 0.05 to 2% by weight, preferably 0.3 to 1.5% by weight, of at least one surfactant selected from anionic and nonionic surfactants and mixtures thereof, and a total of 1 to 5% by weight, preferably 1.5 to 4% by weight, of at least one linear saturated 1-alkanol having 14 to 22 carbon atoms, selected from 1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetyl alcohol), 1-octadecanol (stearyl alcohol) and 1-eicosanol (arachyl alcohol), 1-docosanol and mixtures thereof, whereby in each case no polymers with a degree of polymerization of at least 200 and no polymers with a molecular weight of 10,000 daltons or more, based on the weight of the oxidant preparation (M2), are contained.

It has been found that the thickening due to the interaction between the copolymer in the agent of the present invention and the aforementioned surfactant/1-alkanol mixture in the oxidizing agent preparation (M2) is sufficient and the application properties cannot be further increased or even impaired by the presence of polymers with a degree of polymerization of at least 200 or polymers with a molecular weight of 10,000 daltons or more.

A preferred further packaging unit (kit of parts) according to the invention and a preferred further hair whitening or dyeing method according to the invention, respectively, are characterized in that the oxidant preparation (M2) contains at least one surfactant selected from anionic and nonionic surfactants and mixtures thereof in a total amount of 0.05 to 2% by weight, preferably 0.3 to 1.5% by weight, at least one linear saturated 1-alkanol having 14 to 22 carbon atoms selected from 1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetyl alcohol), 1-octadecanol (stearyl alcohol) and 1-eicosanol (arachyl alcohol) and mixtures thereof in a total amount of 1 to 5% by weight, preferably 1.5 to 4% by weight, and at least one oil in a total amount of 0.2 to 50% by weight, preferably 2 to 40% by weight, particularly preferably 8 to 30% by weight, very particularly preferably 15 to 25% by weight. In each case based on the weight of the oxidant preparation (M2).

A preferred further packaging unit (kit of parts) according to the invention and a preferred further hair whitening or dyeing method according to the invention, respectively, comprise at least one surfactant selected from anionic and nonionic surfactants and mixtures thereof in a total amount of 0.05 to 2% by weight, preferably 0.3 to 1.5% by weight, 1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetyl alcohol), 1-octadecanol (stearyl alcohol) and 1-eicosanol (arachidyl alcohol). It is characterized in that it contains a total of 1 to 5% by weight, preferably 1.5 to 4% by weight, of at least one linear saturated 1-alkanol having 14 to 22 carbon atoms, selected from 1-alkanol (1-alkanol) and mixtures thereof, and 0.2 to 50% by weight, preferably 2 to 40% by weight, particularly preferably 8 to 30% by weight, very particularly preferably 15 to 25% by weight, of at least one oil, in each case based on the weight of the oxidizer preparation (M2), but does not contain polymers with a degree of polymerization of at least 200 and polymers with a molecular weight of 10,000 daltons or more.

The oxidizing agent preparation (M2) used according to the invention, preferably used according to the invention, may also contain a stabilizer, in particular a complexing agent, and a pH buffer substance.

With regard to the cosmetic product (M1) in container C1 and the oxidizing agent preparation (M2) in container C2 of the inventive and preferred inventive kit, what has been said for the inventive and preferred inventive cosmetic product applies mutatis mutandis.

With regard to the cosmetic product (M1) in container C1 of the oxidative hair lightening or hair coloring method according to the present invention and preferred inventions, what has been said about the cosmetic product according to the present invention and preferred inventions applies mutatis mutandis.

As regards the oxidant preparation (M2) in container C2 of the oxidative hair lightening or hair coloring method according to the present invention and preferred according to the invention, the same applies mutatis mutandis to the oxidant preparation (M2) of the oxidative hair lightening or hair coloring kit according to the present invention and preferred according to the invention.

The walls of the containers C1 and C2 are preferably made of a polyolefin such as polypropylene (PP), high density polyethylene (HDPE), medium density polyethylene (MDPE), low density polyethylene (LDPE), linear low density polyethylene (LLDPE). Of these, polyethylene, and in particular high density polyethylene (HDPE), is preferred.

To improve the mixing of (M1) and (M2), it is preferred that the container (C2) containing the oxidizer preparation (M2) is designed as a bottle and has a reclosable opening, such as a snap-on or screw cap. This makes it easier to add the color change agent from the container (C1), which is preferably in the form of a polyolefin bottle.

In summary, the subject matter of the present invention can be summarized as follows:

1.
In each case, based on the weight of the drug,
- 70 to 90% by weight, preferably 73 to 86% by weight, particularly preferably 76 to 84% by weight, of water ,
- at least one alkalizing agent,
- at least one crosslinked copolymer composed of acrylic acid and non-ethoxylated esters of acrylic acid with linear C10-C30 monoalcohols as monomers, said crosslinked copolymer being present in a total amount of 0.2 to 0.6% by weight, preferably 0.3 to 0.5% by weight and particularly preferably 0.4 to 0.45% by weight, in each case based on the weight of the drug,
- 0.3 to 1.5% by weight, preferably 0.4 to 1.2% by weight, particularly preferably 0.5 to 1.0% by weight and very particularly preferably 0.6 to 0.8% by weight of at least one linear saturated 1-alkanol having one hydroxy group and 8 to 22 carbon atoms,
- at least one anionic surfactant in a total amount of 1 to 6% by weight, preferably 2 to 5% by weight, particularly preferably 2.5 to 4.5% by weight, and at least one polymer selected from cationic and zwitterionic polymers in a total amount of 0.1 to 2 wt.-%, preferably 0.2 to 1.5 wt.-%, more preferably 0.35 to 0.5 wt.-%,
- Optionally, at least one coloring substance selected from oxidative dye precursors, direct action hair dyes and mixtures thereof;
An agent for oxidative hair lightening or hair coloring comprising:
As a result, it does not contain an oxidizing agent,
The drug is
- preferably containing sodium polyacrylate in a total amount of 0.1 to 1.5% by weight, particularly preferably 0.5 to 1.3% by weight and very particularly preferably 0.8 to 1.1% by weight, in each case based on the weight of the drug, preferably with a weight-average molar mass Mw in the range from 1,000,000 to 20,000,000 Daltons, particularly preferably 6,000,000 to 15,000,000 Daltons, particularly preferably said sodium polyacrylate being contained in a pregelled state in the water-in-oil emulsion,
- Furthermore, said agents are each characterized in that their pH value, measured at 20° C., is in the range of 7.5 to 9.5, preferably in the range of 8.0 to 9.0.

2.
2. The agent according to point 1, characterized in that the alkalizing agent is selected from the group comprising ammonium hydroxide, basic amino acids, alkali hydroxides, alkanolamines, alkali metal metasilicates, alkaline phosphates and alkaline hydrogen phosphates and mixtures thereof, particularly preferably from the group comprising alkanolamines, potassium hydroxide, sodium hydroxide and mixtures thereof.

3.
3. The agent according to points 1 or 2, characterized in that the at least one anionic surfactant is selected from C ₈ -C 20 alkyl sulfates, C 8 -C ₂₀ alkyl ether sulfates and C ₈ -C ₂₀ ether carboxylic acids, each having ₈ to ₂₀ C atoms in the alkyl group and 0 to 12 ethylene oxide groups in the molecule, preferably sodium laureth sulfate is present which has 1 to 3, particularly preferably 2, ethylene oxide groups in the molecule.

4.
Agent according to any of points 1 to 3, characterized in that said at least one crosslinked copolymer of acrylic acid and a non-ethoxylated ester of acrylic acid with a linear C10-C30 monoalcohol is chosen from the copolymers of the INCI name Acrylates/C10-30 Alkyl Acrylate Crosspolymer.

5.
5. The agent according to any of points 1 to 4, characterized in that the viscosity, measured at 20 ° C. using a Haake VT 550 rotational viscometer, measuring system SV, is in the range from 3,000 to 25,000 mPas, preferably from 4,000 to 20,000 mPas, particularly preferably from 7,000 to 10,000 mPas.

6.
6. Agent according to any of points 1 to 5, characterized in that the at least one nonionic surfactant is chosen from nonionic surfactants treated with 7 to 80 moles of ethylene oxide per mole of ethoxylated castor oil, ethoxylated C ₈ -C ₃₀ alkanols with 6 to 30 moles of ethylene oxide per mole, preferably 12 to 20 moles of ethylene oxide per mole, ethoxylated C ₈ -C ₃₀ carboxylic acids with 5 to 30 moles of ethylene oxide per mole, ethoxylated sorbitan monoesters of linear saturated and unsaturated C ₁₂ -C ₃₀ carboxylic acids , optionally hydroxylated, containing 4 to 50 moles of ethylene oxide per mole, alkyl mono- and oligoglycosides having 8 to 22 carbon atoms in the alkyl group, and mixtures of the abovementioned substances.

7.
7. The agent according to any of points 1 to 6, characterized in that the at least one oil is preferably present in a total amount of 0.01 to 7 wt.-%, more preferably 0.1 to 6 wt.-%, particularly preferably 0.5 to 5.5 wt.-% and very particularly preferably 1 to 5.2 wt.-%, each based on the weight of the agent.

8.
8. Agent according to any of points 1 to 7, characterized in that the at least one linear saturated 1-alkanol having one hydroxy group and from 8 to 22 carbon atoms is chosen from lauryl alcohol, coconut alcohol, 1-tetradecanol (myristyl alcohol), cetyl alcohol and stearyl alcohol and mixtures thereof, in particular from coconut alcohol and lauryl alcohol.

9.
9. The drug according to any of points 1 to 8, characterized in that the at least one nonionic surfactant is contained in a total amount of 0.01 to 1 wt.-%, preferably 0.05 to 0.5 wt.-%, particularly preferably 0.1 to 0.3 wt.-%, each based on the weight of the drug.

10.
The at least one oil is preferably selected from natural and synthetic hydrocarbons, particularly preferably mineral oils, paraffin oils, C ₁₈ -C ₃₀ isoparaffins, in particular isoeicosane, polyisobutene and polydecene, C ₈ -C ₁₆ isoparaffins and 1,3-di(2-ethylhexyl)-cyclohexane; branched alkanols containing hydroxy groups and from 10 to 50 carbon atoms; benzoic acid esters of linear or branched C _8-22 alkanols; triglycerides of linear or branched, saturated or unsaturated, optionally hydroxylated C _8-30 fatty acids, in particular natural oils; dicarboxylic acid esters of linear or branched C ₂ -C ₁₀ alkanols; esters of linear or branched, saturated or unsaturated fatty alcohols having 2 to 30 carbon atoms with linear or branched, saturated or unsaturated fatty acids having 2 to 30 carbon atoms, which may be hydroxylated; mono- or polyhydric C _8-22 10. Agent according to any of points 1 to 9, characterized in that it is selected from the group consisting of addition products of 1 to 5 propylene oxide units to alkanols; _C8 - _C22 fatty alcohol esters of mono- or polyhydric _C2 - _C7 hydroxycarboxylic acids; symmetrical, asymmetrical or cyclic esters of carbonic acid with _C3-22 alkanols, _C3-22 alkanediols or _C3-22 alkanetriols; esters of dimers of unsaturated _C12 - _C22 fatty acids (dimer fatty acids) with monohydric linear, branched or cyclic _C2 - _C18 alkanols or with polyhydric linear or branched _C2 - _C6 alkanols; silicone oils and mixtures of the abovementioned substances.

11.
11. An agent according to any of points 1 to 10, characterized in that it contains at least one colouring substance selected from oxidative dye precursors, preferably in an amount of 0.005 to 5% by weight, based on the weight of the agent, particularly preferably at least one developer component and optionally at least one coupler component, whereby very preferably the total amount of oxidative dye precursors is 0.005 to 12% by weight, preferably 0.1 to 7% by weight, particularly preferably 0.5 to 5% by weight, each based on the weight of the agent.

12.
12. The agent according to any of points 1 to 11, characterized in that the at least one coloring substance selected from direct-acting hair dyes preferably has a total amount of 0.001 to 10% by weight, preferably 0.01 to 8% by weight, more preferably 0.1 to 5% by weight and in particular 0.5 to 2% by weight, each based on the weight of the agent.

13.
13. The drug according to any of points 1 to 12, characterized in that at least one polymer selected from cationic and zwitterionic polymers is contained in a total amount of 0.1 to 2 wt.-%, preferably 0.2 to 1.5 wt.-%, particularly preferably 0.35 to 0.5 wt.-%, based on the weight of the drug in each case.

14.
14. Agent according to any of points 1 to 13, characterized in that the at least one cationic or zwitterionic polymer is chosen from Polyquaternium-22, Polyquaternium-39, acrylamidopropyltrimonium chloride/acrylate copolymer and Polyquaternium-6 and mixtures thereof, Polyquaternium-22 being particularly preferred.

15.
15. The agent according to any of points 1 to 14, characterized in that polyquaternium-22 is contained in an amount of preferably 0.1 to 2 wt.-%, particularly preferably 0.2 to 1.5 wt.-% and very particularly preferably 0.35 to 0.5 wt.-%, in each case based on the weight of the agent.

16.
16. The agent according to any of points 1 to 15, wherein 4-hydroxyacetophenone is preferably in an amount of 0.001 to 2% by weight, preferably 0.01 to 1% by weight, preferably 0.1 to 0.6% by weight, in particular 0.2 to 0.4% by weight, each based on the weight of the agent.

17.
Packaged separately from each other,
a) at least one container (C1) containing an agent for oxidative hair colouring according to any of points 1 to 16, and b) at least one container (C2) containing an oxidant preparation (M2) which contains 40 to 96% by weight, preferably 70 to 93% by weight, particularly preferably 80 to 90% by weight of water and furthermore a total of 0.5 to 23% by weight, more preferably 2.5 to 13% by weight, particularly preferably 3 to 10% by weight of hydrogen peroxide, more preferably 6 to 9% by weight, and has a pH value in the range of 2.0 to 6.5, preferably 2.5 to 5.5, more preferably 2.8 to 5.0, each measured at 20° C., said percentages by weight being in each case based on the weight of the oxidant preparation (M2),
Includes parts kit packaging unit.

18.
18. The packaging unit (kit of parts) according to point 17, characterized in that the oxidizer preparation (M2) contains at least one copolymer selected from crosslinked acrylic acid/acrylic acid-C1-C6-alkyl ester copolymers and crosslinked methacrylic acid/acrylic acid-C1-C6-alkyl ester copolymers, preferably in a total amount of 0.1 to 7% by weight, particularly preferably 0.5 to 6% by weight and very particularly preferably 1 to 4.5% by weight, in each case based on the weight of the oxidizer preparation (M2), and preferably does not contain cationic surfactants.

19.
19. The packaging unit (kit of parts) according to point 18, characterized in that the oxidizer preparation (M2) contains at least one crosslinked copolymer selected from methacrylic acid/methyl acrylate, methacrylic acid/ethyl acrylate, methacrylic acid/propyl acrylate, methacrylic acid/butyl acrylate, methacrylic acid/pentyl acrylate, methacrylic acid/hexyl acrylate, acrylic acid/methyl acrylate, acrylic acid/ethyl acrylate, acrylic acid/propyl acrylate, acrylic acid/butyl acrylate, acrylic acid/pentyl acrylate and acrylic acid/hexyl acrylate copolymers and mixtures thereof in a total amount of 0.1 to 7% by weight, particularly preferably 0.5 to 6% by weight and very particularly preferably 1 to 4.5% by weight, in each case based on the weight of the oxidizer preparation (M2), and that it does not contain cationic surfactants.

20.
20. Packaging unit (kit of parts) according to points 17-19, characterized in that said oxidant preparation (M2) comprises at least one surfactant chosen from anionic and nonionic surfactants and mixtures thereof in a total amount of 0.05-2% by weight, preferably 0.3-1.5% by weight, and at least one linear saturated 1-alkanol having 14 to 22 carbon atoms chosen from 1-tetradecanol (myristyl alcohol), 1-hexadecanol (cetyl alcohol), 1-octadecanol (stearyl alcohol), 1-eicosanol (arachyl alcohol) and 1-docosanol and mixtures thereof in a total amount of 1-5% by weight, preferably 1.5-4% by weight, all amounts based on the weight of the oxidant preparation (M2).

21.
21. The packaging unit (kit of parts) according to points 17 to 20, characterized in that the oxidizer preparation (M2) contains at least one oil in a total amount of 0.2 to 50% by weight, preferably 2 to 40% by weight, particularly preferably 8 to 30% by weight and very particularly preferably 15 to 25% by weight, in each case based on the weight of the oxidizer preparation (M2).

22.
22. The packaging unit (kit of parts) according to any of points 17, 20 or 21, characterized in that the oxidizer preparation (M2) contains at least one cationic surfactant, preferably in a total amount of 0.05 to 3 wt.-%, particularly preferably 0.1 to 1.5 wt.-% and very particularly preferably 0.3 to 0.9 wt.-%, in each case based on the weight of the oxidizer preparation (M2).

23.
23. The packaging unit (kit of parts) according to any of points 17 or 21-22, characterized in that the oxidizing agent preparation (M2) does not contain any polymers with a degree of polymerization of at least 200 and does not contain any polymers with a molecular weight of more than or equal to 10 000 Daltons.

24.
24. Packaging unit (kit of parts) according to any of points 17 to 21 or 23, characterized in that the oxidizing agent preparation (M2) does not contain a cationic surfactant.

25.
25. The kit of parts according to any of points 17 to 24, characterized in that the finished application mixtures of (M1) and (M2) each have a pH value, measured at 20° C., in the range from 6.0 to 8.0, preferably from 6.5 to 7.5.

26.
The process steps are as follows:
i) preparation of a cosmetic product for oxidative hair coloring (M1) according to any of points 1 to 16,
ii) providing an oxidizer preparation (M2) which contains 40 to 96% by weight, preferably 70 to 93% by weight, more preferably 80 to 90% by weight of water and furthermore 0.5 to 23% by weight, more preferably 2.5 to 13% by weight, particularly preferably 3 to 10% by weight, very particularly preferably 6 to 12% by weight and very particularly preferably 6 to 9% by weight of hydrogen peroxide in a total amount and has a pH value in the range of 2.0 to 6.5, preferably 2.5 to 5.5, particularly preferably 2.8 to 5.0, measured in each case at 20° C.,
Optionally, at least one copolymer selected from crosslinked acrylic acid/acrylic acid-C1-C6-alkyl ester copolymers and crosslinked methacrylic acid/acrylic acid-C1-C6-alkyl ester copolymers may be present, preferably in a total amount of 0.1 to 7% by weight, particularly preferably 0.5 to 6% by weight, very particularly preferably 1 to 4.5% by weight, and preferably free of cationic surfactants, all amounts referring to the weight of the oxidizer preparation (M2),
iii) mixing the cosmetic product (M1) with the oxidizing agent preparation (M2), preferably in a weight ratio (M1):(M2) ranging from 0.2:1 to 3:1, preferably from 0.3:1 to 2.5:1, particularly preferably from 1:1 to 1.5:1, followed immediately by
iv) applying the mixture obtained in step iii) to the hair and leaving the mixture on the hair for 1 to 60 minutes, preferably 20 to 45 minutes, at room temperature and/or at 30-60°C, v) rinsing the hair with water and/or a cleaning composition, and vi) optionally applying an after treatment to the hair, rinsing if necessary and then drying.

27.
27. The method according to point 26, characterized in that the finished coating mixtures of (M1) and (M2), respectively, have a pH value in the range of 6.0 to 8.0, preferably 6.5 to 7.5, measured at 20 ° C.

28.
28. Process for oxidative hair lightening or hair colouring according to points 26 or 27, characterized in that the oxidizing agent preparation (M2) is formed as in any one of points 17 to 25.

The following examples are intended to illustrate the subject matter of the present invention without limiting it thereto.

Preparation of the application mixture and coloring of hair
The dye gel and the developer according to Table 2 were mixed homogeneously in a weight ratio of 5:2 (5 parts dye gel and 2 parts developer). The coating mixture thus obtained was applied immediately after preparation to human hair strands (natural white hair, Carling Co.) (liquid ratio 4 grams of coating mixture per gram of hair) and left on the hair for 30 minutes at room temperature (22° C.). The strands were then rinsed and dried with a towel.

Preferred aspects of the present specification include at least the following.
[1] Based on the weight of each drug,
- 70 to 90% by weight, preferably 73 to 86% by weight and particularly preferably 76 to 84% by weight of water,
at least one alkalizing agent,
at least one crosslinked copolymer composed of acrylic acid and non-ethoxylated esters of acrylic acid with linear C10-C30 monoalcohols as monomers, said crosslinked copolymer being present in a total amount of 0.2 to 0.6% by weight, preferably 0.3 to 0.5% by weight and particularly preferably 0.4 to 0.45% by weight, in each case based on the weight of the drug,
- at least one linear saturated 1-alkanol having one hydroxy group and 8 to 22 carbon atoms in a total amount of 0.3 to 1.5% by weight, preferably 0.4 to 1.2% by weight, particularly preferably 0.5 to 1.0% by weight and very particularly preferably 0.6 to 0.8% by weight,
- at least one anionic surfactant in a total amount of from 1 to 6% by weight, preferably from 2 to 5% by weight and particularly preferably from 2.5 to 4.5% by weight, and
optionally at least one colouring substance chosen from oxidative dye precursors, direct action hair dyes and mixtures thereof,
An agent for oxidative hair lightening or hair coloring comprising
The agent does not contain an oxidizing agent;
The drug is
preferably containing sodium polyacrylate in a total amount of 0.1 to 1.5% by weight, particularly preferably 0.5 to 1.3% by weight and very particularly preferably 0.8 to 1.1% by weight, in each case based on the weight of the drug, preferably with a weight-average molar mass Mw in the range from 1,000,000 to 20,000,000 Daltons, particularly preferably 6,000,000 to 15,000,000 Daltons, particularly preferably said sodium polyacrylate being contained in a pregelled state in a water-in-oil emulsion,
furthermore, said agents are each characterized in that their pH value, measured at 20° C., is in the range of 7.5 to 9.5, preferably in the range of 8.0 to 9.0;
Drugs.
[2] The agent according to [1], characterized in that the alkalizing agent is selected from the group comprising ammonium hydroxide, basic amino acids, alkali hydroxides, alkanolamines, alkali metal metasilicates, alkali phosphates and alkali hydrogen phosphates, and mixtures thereof, particularly preferably from the group comprising alkanolamines, potassium hydroxide, sodium hydroxide, and mixtures thereof.
[3] The at least one anionic surfactant is a C aryl group having 8 to 20 C atoms in the alkyl group and 0 to 12 ethylene oxide groups in the molecule. ₈ -C ₂₀ Alkyl sulfate, C ₈ -C ₂₀ Alkyl ether sulfate and C ₈ -C ₂₀ The agent according to [1] or [2], characterized in that sodium laureth sulfate selected from ether carboxylic acids, preferably having 1 to 3, particularly preferably 2, ethylene oxide groups in the molecule, is present.
[4] The agent according to any one of [1] to [3], characterized in that the at least one crosslinked copolymer of acrylic acid and a non-ethoxylated ester of acrylic acid with a linear C10-C30 monoalcohol is selected from copolymers of the INCI name Acrylates/C10-30 Alkyl Acrylate Crosspolymer.
[5] The agent according to any one of [1] to [4], characterized in that in each case the viscosity, measured at 20 ° C. using a Haake VT 550 rotational viscometer, measurement system SV, is in the range of 3,000 to 25,000 mPas, preferably 4,000 to 20,000 mPas, particularly preferably 7,000 to 10,000 mPas.
[6] Preferably, nonionic surfactants containing 7 to 80 moles of ethylene oxide per mole of ethoxylated castor oil, ethoxylated C containing 6 to 30 moles, preferably 12 to 20 moles, of ethylene oxide per mole of ethoxylated castor oil. ₈ -C ₃₀ Alkanol, ethoxylated C containing 5 to 30 moles of ethylene oxide per mole ₈ -C ₃₀ Carboxylic acids, optionally hydroxylated linear saturated and unsaturated C ₁₂ -C ₃₀ 6. The agent according to any one of [1] to [5], characterized in that it contains at least one non-ionic surfactant selected from ethoxylated sorbitan monoesters of carboxylic acids, alkyl mono- and oligoglycosides having 8 to 22 carbon atoms in the alkyl group, and mixtures of the above substances.
[7] The agent according to any one of [1] to [6], characterized in that the at least one cationic or zwitterionic polymer is selected from polyquaternium-22, polyquaternium-39, acrylamidopropyltrimonium chloride/acrylate copolymer and polyquaternium-6 and mixtures thereof, particularly preferably polyquaternium-22.
[8] The agent according to any one of [1] to [7], which comprises at least one oil, preferably in a total amount of 0.01 to 7 wt.%, more preferably 0.1 to 6 wt.%, particularly preferably 0.5 to 5.5 wt.%, and very preferably 1 to 5.2 wt.%, each based on the weight of the agent.
[9] The agent according to any one of [1] to [8], characterized in that the at least one linear saturated 1-alkanol having one hydroxyl group and 8 to 22 carbon atoms is selected from lauryl alcohol, coconut alcohol, 1-tetradecanol (myristyl alcohol), cetyl alcohol and stearyl alcohol, and mixtures thereof, in particular from coconut alcohol and lauryl alcohol.
[10] The drug according to any one of [1] to [9], characterized in that the at least one nonionic surfactant is contained in a total amount of 0.01 to 1 wt %, preferably 0.05 to 0.5 wt %, and particularly preferably 0.1 to 0.3 wt %, based on the weight of the drug.
[11] The at least one oil is selected from natural and synthetic hydrocarbons, particularly preferably mineral oil, paraffin oil, C ₁₈ -C ₃₀ Isoparaffins, especially isoeicosane, polyisobutene and polydecene, C ₈ -C ₁₆ isoparaffins, and 1,3-di(2-ethylhexyl)-cyclohexane; branched alkanols containing hydroxy groups and 10 to 50 carbon atoms, linear or branched C _8-22 Benzoic acid esters of alkanols; linear or branched, saturated or unsaturated, optionally hydroxylated, C _8-30 Triglycerides of fatty acids, especially natural oils; linear or branched C ₂ -C ₁₀ Dicarboxylic acid esters of alkanols; esters of linear or branched, saturated or unsaturated fatty alcohols having 2 to 30 carbon atoms and linear or branched, saturated or unsaturated fatty acids having 2 to 30 carbon atoms, which may be hydroxylated; mono- or polyvalent C _8-22 Addition products of 1 to 5 propylene oxide units onto alkanols; mono- or polyhydric C ₂ -C ₇ Hydroxycarboxylic acid C ₈ -C ₂₂ Fatty alcohol esters; Carbonic acid and C _3-22 Alkanol, C _3-22 Alkanediol or C _3-22 Symmetric, unsymmetric or cyclic esters with alkanetriols; unsaturated C ₁₂ -C ₂₂ Dimers of fatty acids (dimeric fatty acids) and monovalent linear, branched or cyclic C ₂ -C ₁₈ Alkanol, or polyvalent linear or branched C ₂ -C ₆ 11. The agent according to any one of claims 1 to 10, characterized in that it is selected from the group consisting of esters with alkanols; silicone oils and mixtures of the above substances.
[12] The agent according to any one of [1] to [11], characterized in that it contains at least one coloring substance selected from oxidation dye precursors, preferably in an amount of 0.005 to 5% by weight based on the weight of the agent, and particularly preferably contains at least one developer component and optionally at least one coupler component, and very particularly preferably the total amount of oxidation dye precursors is 0.005 to 12% by weight, preferably 0.1 to 7% by weight, particularly preferably 0.5 to 5% by weight, each based on the weight of the agent.
[13] Packaged separately from each other,
a) at least one container (C1) containing an agent for oxidative hair lightening or hair coloring according to any one of [1] to [12], and
b) at least one container (C2) containing an oxidizer preparation (M2), which contains 40 to 96% by weight, preferably 70 to 93% by weight, particularly preferably 80 to 90% by weight of water and further contains hydrogen peroxide in a total amount of 0.5 to 23% by weight, more preferably 2.5 to 13% by weight, particularly preferably 3 to 10% by weight, very particularly preferably 6 to 9% by weight, and has a pH value in the range of 2.0 to 6.5, preferably 2.5 to 5.5, very particularly preferably 2.8 to 5.0, measured in each case at 20° C., the weight percentages being in each case based on the weight of the oxidizer preparation (M2),
Includes parts kit packing unit.
[14] The process steps:
i) preparing a cosmetic composition (M1) for oxidative hair coloring according to any one of [1] to [13];
ii) preparation of an oxidizer preparation (M2) which contains 40 to 96% by weight, preferably 70 to 93% by weight, particularly preferably 80 to 90% by weight of water and further contains hydrogen peroxide in a total amount of 0.5 to 23% by weight, more preferably 2.5 to 13% by weight, particularly preferably 3 to 10% by weight, most preferably 6 to 9% by weight, and has a pH value in the range of 2.0 to 6.5, preferably 2.5 to 5.5, very particularly preferably 2.8 to 5.0, each measured at 20° C.,
At least one copolymer selected from crosslinked acrylic acid/acrylic acid-C1-C6-alkyl ester copolymers and crosslinked methacrylic acid/acrylic acid-C1-C6-alkyl ester copolymers may optionally be present, preferably in a total amount of 0.1 to 7% by weight, particularly preferably 0.5 to 6% by weight and very particularly preferably 1 to 4.5% by weight, in each case based on the weight of the oxidizer preparation (M2),
iii) mixing of said cosmetic composition (M1) with said oxidizing agent preparation (M2), preferably in a weight ratio (M1):(M2) ranging from 0.2:1 to 3:1, preferably from 0.3:1 to 2.5:1, particularly preferably from 1:1 to 1.5:1, followed immediately by
iv) applying the mixture obtained in step iii) to the hair and leaving the mixture on the hair for 1 to 60 minutes, preferably 20 to 45 minutes, at room temperature and/or at 30 to 60°C.
v) rinsing the hair with water and/or a cleaning composition; and
vi) optionally applying an after-treatment agent to the hair, optionally rinsing, and then drying.
13. A method of oxidative hair lightening or hair coloring comprising:
[15] The method according to [14], characterized in that the finished coating mixtures of (M1) and (M2), respectively, have a pH value in the range of 6.0 to 8.0, preferably 6.5 to 7.5, measured at 20°C.

Claims (15)

Packed separately from each other,
a) at least one container (C1) containing an oxidative hair lightening or hair coloring agent (M1);
b) at least one container (C2) containing an oxidizing agent preparation (M2);
A parts kit packaging unit comprising:
The drug (M1) is, based on the weight of the drug (M1),
from 70 to 90% by weight of water,
at least one alkalizing agent,
- at least one crosslinked copolymer composed of monomers consisting of acrylic acid and non-ethoxylated esters of acrylic acid with linear C10-C30 monoalcohols in a total amount of 0.2 to 0.6% by weight,
- a total amount of 0.3 to 1.5% by weight of at least one linear saturated 1-alkanol having one hydroxy group and 8 to 22 carbon atoms,
- a total amount of from 1 to 6% by weight of at least one anionic surfactant, and - a total amount of from 0.1 to 1.5% by weight of sodium polyacrylate with a weight-average molar mass Mw in the range from 1,000,000 to 20,000,000 Daltons,
Contains no oxidizing agents
The pH value measured at 20°C is within the range of 7.5 to 9.5,
The oxidizing agent preparation (M2) comprises
- Water, and
- Contains hydrogen peroxide,
The oxidizer preparation (M2) has a viscosity in the range of 10 to 7500 mPas, measured at 20 ° C. using a Haake VT 550 rotational viscometer, measuring system SV;
Parts kit packaging unit. 2. The kit-of-parts packaging unit according to claim 1, characterized in that the alkalizing agent contained in the agent (M1) is selected from the group comprising ammonium hydroxide, basic amino acids, alkali hydroxides, alkanolamines, alkali metal metasilicates, alkaline phosphates and alkaline hydrogen phosphates and mixtures thereof. 3. A kit-of-parts packaging unit according to claim 1 or 2, characterized in that the at least one anionic surfactant contained in the agent (M1) is selected from C ₈ -C ₂₀ alkyl sulfates, C ₈ -C ₂₀ alkyl ether sulfates and C ₈ -C ₂₀ ether carboxylic acids, each having 8 to 20 C atoms in the alkyl group and 0 to 12 ethylene oxide groups in the molecule. Kit-of-parts packaging unit according to any of claims 1 to 3, characterized in that the at least one crosslinked copolymer of acrylic acid and a non-ethoxylated ester of acrylic acid with a linear C10-C30 monoalcohol contained in agent (M1) is selected from copolymers with the INCI name Acrylates/C10-30 Alkyl Acrylate Crosspolymer. The kit-of-parts packaging unit according to any one of claims 1 to 4, characterized in that the viscosity of the agent (M1), measured at 20 ° C using a Haake VT 550 rotational viscometer, measurement system SV, is in the range of 3,000 to 25,000 mPas . 6. A kit-of-parts packaging unit according to claim 1, characterized in that the agent (M1) contains at least one non-ionic surfactant selected from non-ionic surfactants containing 7 to 80 moles of ethylene oxide per mole of ethoxylated castor oil, ethoxylated _C8 - _C30 alkanols containing ₆ to 30 moles of ethylene oxide per mole, ethoxylated C8- _C30 carboxylic acids with 5 to 30 moles of _ethylene oxide per mole, ethoxylated sorbitan monoesters of linear saturated and unsaturated _C12 -C30 carboxylic acids with 4 to 50 moles of ethylene oxide per mole, alkyl mono- and oligoglycosides having 8 to 22 carbon atoms in the alkyl group, and mixtures of the above substances. A kit-of-parts packaging unit according to any of claims 1 to 6, characterized in that the agent (M1) comprises at least one cationic or zwitterionic polymer selected from polyquaternium-22, polyquaternium-39, acrylamidopropyltrimonium chloride/acrylate copolymer and polyquaternium-6 and mixtures thereof. A kit-of- parts packaging unit according to any one of claims 1 to 7, wherein the agent (M1) comprises at least one oil in a total amount of 0.01 to 7% by weight, based on the weight of the agent (M1). A kit-of-parts packaging unit according to any of claims 1 to 8, characterized in that the at least one linear saturated 1-alkanol having one hydroxy group and 8 to 22 carbon atoms contained in the agent (M1) is selected from lauryl alcohol, coconut alcohol, 1-tetradecanol (myristyl alcohol), cetyl alcohol and stearyl alcohol , and mixtures thereof. The kit-of -parts packaging unit according to claim 6, characterized in that the at least one non-ionic surfactant is contained in a total amount of 0.01 to 1% by weight, based on the weight of the agent (M1). The at least one oil may be selected from the group consisting of mineral oil, paraffin oil, C ₁₈ -C ₃₀ isoparaffin, benzoic acid esters of branched alkanols, linear or branched C _8-22 alkanols containing hydroxy groups and 10 to 50 carbon atoms, triglycerides of linear or branched, saturated or unsaturated, C _8-30 fatty acids, dicarboxylic acid esters of linear or branched C ₂ -C ₁₀ alkanols, esters of linear or branched, saturated or unsaturated fatty alcohols having 2 to 30 carbon atoms and linear or branched, saturated or unsaturated fatty acids having 2 to 30 carbon atoms, addition products of 1 to 5 propylene oxide units to monohydric or polyhydric C _8-22 alkanols, C 8 -C ₂₂ fatty alcohol esters of monohydric or polyhydric C ₂ -C ₇ hydroxycarboxylic acids, and esters of carbonic acid with C _3-22 alkanols, C _3-22 alkanediols or C _3-22 alkanediols. 9. The kit-of-parts packaging unit according to claim 8, characterized in that the ester is selected from the group consisting of symmetric, asymmetric or cyclic esters with _3-22 alkanetriols; esters of dimers of unsaturated C ₁₂ -C ₂₂ fatty acids (dimer fatty acids) with monovalent linear, branched or cyclic C ₂ -C ₁₈ alkanols or polyvalent linear or branched C ₂ -C ₆ alkanols ; silicone oils and mixtures of the above substances. 12. A kit-of-parts packaging unit according to any of claims 1 to 11, characterized in that at least one colouring substance selected from oxidative dye precursors is contained in the agent (M1) in an amount of 0.005 to 5% by weight, based on the weight of the agent (M1), and the total amount of oxidative dye precursors is 0.005 to 12% by weight, based on the weight of the agent (M1). 13. The kit-of-parts packaging unit according to any of claims 1 to 12, wherein the oxidizer preparation (M2) contains 40 to 96 wt.-% water and 0.5 to 23 wt.-% hydrogen peroxide in total, each based on the weight of the oxidizer preparation (M2), and has a pH value in the range of 2.0 to 6.5, measured at 20°C. A method of oxidative hair lightening or hair colouring using a kit-of- parts packaging unit according to any one of claims 1 to 13, comprising:
The process steps are as follows:
i) preparing the drug (M1);
ii) preparation of an oxidizing agent preparation (M2),
iii) mixing said agent (M1) and said oxidizing agent preparation (M2) in a weight ratio (M1):(M2) ranging from 0.2:1 to 3:1, followed immediately by
iv) applying the mixture obtained in step iii) to the hair and leaving the mixture on the hair for 1 to 60 minutes at room temperature and/or at 30-60°C; v) rinsing the hair with water and/or a cleaning composition; and vi) drying the hair. The method according to claim 14, characterized in that the finished coating mixture of (M1) and (M2) has a pH value in the range of 6.0 to 8.0, measured at 20°C.